diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 67a3ae87..8173267b 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -5,68 +5,62 @@ on: [push, pull_request]
 jobs:
   build:
     runs-on: windows-latest
+    strategy:
+      matrix:
+        mode: ["Debug", "Release"]
     steps:
-    - uses: actions/checkout@v1
+    - name: Git checkout
+      uses: actions/checkout@v1
       with:
         submodules: recursive
-    - name: Install nuget
-      run: choco install nuget.commandline
-    - name: OTAPI Debug
-      shell: cmd
+    - name: Install NuGet client
+      uses: nuget/setup-nuget@v1
+    - name: Restore NuGet packages
       run: |
         nuget restore .\TerrariaServerAPI\TShock.4.OTAPI.sln
-        "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\msbuild.exe" .\TerrariaServerAPI\TShock.4.OTAPI.sln /p:Configuration=Debug
-        cd .\TerrariaServerAPI\TShock.Modifications.Bootstrapper\bin\Debug
-        TShock.Modifications.Bootstrapper.exe
-    - name: OTAPI Release
+        nuget restore TShock.sln
+    - name: Build OTAPI
       shell: cmd
       run: |
-        nuget restore .\TerrariaServerAPI\TShock.4.OTAPI.sln
-        "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\msbuild.exe" .\TerrariaServerAPI\TShock.4.OTAPI.sln /p:Configuration=Release
-        cd .\TerrariaServerAPI\TShock.Modifications.Bootstrapper\bin\Release
+        "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\msbuild.exe" .\TerrariaServerAPI\TShock.4.OTAPI.sln /p:Configuration=${{ matrix.mode }}
+        cd .\TerrariaServerAPI\TShock.Modifications.Bootstrapper\bin\${{ matrix.mode }}
         TShock.Modifications.Bootstrapper.exe
-    - name: TerrariaServerAPI Debug
+    - name: Build TerrariaServerAPI
       shell: cmd
       run: |
         cd .\TerrariaServerAPI
-        "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\msbuild.exe" .\TerrariaServerAPI\TerrariaServerAPI.csproj /p:Configuration=Debug
-    - name: TShock Debug
+        "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\msbuild.exe" .\TerrariaServerAPI\TerrariaServerAPI.csproj /p:Configuration=${{ matrix.mode }}
+    - name: Build TShock
       shell: cmd
       run: |
-        nuget restore TShock.sln
-        "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\msbuild.exe" .\TShockAPI\TShockAPI.csproj /p:Configuration=Debug
-    - name: TerrariaServerAPI Release
-      shell: cmd
-      run: |
-        cd .\TerrariaServerAPI
-        "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\msbuild.exe" .\TerrariaServerAPI\TerrariaServerAPI.csproj /p:Configuration=Release
-    - name: TShock Release
-      shell: cmd
-      run: |
-        nuget restore TShock.sln
-        "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\msbuild.exe" .\TShockAPI\TShockAPI.csproj /p:Configuration=Release
+        "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\msbuild.exe" .\TShockAPI\TShockAPI.csproj /p:Configuration=${{ matrix.mode }}
     - name: Normalize release packaging
       shell: cmd
       run: |
-        xcopy /Y prebuilts\*.* TShockAPI\bin\Release
-        xcopy /Y prebuilts\*.* TShockAPI\bin\Debug
-        mkdir TShockAPI\bin\Debug\ServerPlugins
-        mkdir TShockAPI\bin\Release\ServerPlugins
-        move TShockAPI\bin\Release\TShockAPI.dll TShockAPI\bin\Release\ServerPlugins
-        move TShockAPI\bin\Debug\TShockAPI.dll TShockAPI\bin\Debug\ServerPlugins
-    - uses: actions/upload-artifact@master
-      with:
-        name: Experimental TShock (not debug)
-        path: TShockAPI\bin\Release
-    - uses: actions/upload-artifact@master
+        xcopy /Y prebuilts\*.* TShockAPI\bin\${{ matrix.mode }}
+        mkdir TShockAPI\bin\${{ matrix.mode }}\ServerPlugins
+        move TShockAPI\bin\${{ matrix.mode }}\TShockAPI.dll TShockAPI\bin\${{ matrix.mode }}\ServerPlugins
+    - name: Upload TShock (Debug)
+      if: contains(matrix.mode, 'Debug')
+      uses: actions/upload-artifact@master
       with:
         name: Experimental TShock (debug)
         path: TShockAPI\bin\Debug
-    - uses: actions/upload-artifact@master
+    - name: Upload OTAPI Bootstrapper (Debug)
+      if: contains(matrix.mode, 'Debug')
+      uses: actions/upload-artifact@master
       with:
         name: Experimental (debug) OTAPI Bootstrapper
         path: .\TerrariaServerAPI\TShock.Modifications.Bootstrapper\bin\Debug\TShock.Modifications.Bootstrapper.exe
-    - uses: actions/upload-artifact@master
+    - name: Upload TShock (Not Debug)
+      if: contains(matrix.mode, 'Release')
+      uses: actions/upload-artifact@master
+      with:
+        name: Experimental TShock (not debug)
+        path: TShockAPI\bin\Release
+    - name: Upload OTAPI Bootstrapper (Not Debug)
+      if: contains(matrix.mode, 'Release')
+      uses: actions/upload-artifact@master
       with:
         name: Experimental (not debug) OTAPI Bootstrapper
         path: .\TerrariaServerAPI\TShock.Modifications.Bootstrapper\bin\Release\TShock.Modifications.Bootstrapper.exe
diff --git a/CHANGELOG.md b/CHANGELOG.md
index b3d5cfb3..9eda1a4c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,10 @@
 
 This is the rolling changelog for TShock for Terraria. Use past tense when adding new entries; sign your name off when you add or change something. This should primarily be things like user changes, not necessarily codebase changes unless it's really relevant or large.
 
-## Upcoming Release
+## Upcoming release
+* Your change goes here!
+
+## TShock 4.4.0 (Pre-release 9)
 * Fixed pet licenses. (@Olink)
 * Added initial support for Journey mode in SSC worlds. (@Olink)
 * Made TShock database MySQL 8 compatible by escaping column names in our IQueryBuilder code. (Name `Groups` is a reserved element in this version, which is used in our `Region` table.) (@Patrikkk)
@@ -29,6 +32,7 @@ This is the rolling changelog for TShock for Terraria. Use past tense when addin
   * To add this command to your guest group, give them `tshock.synclocalarea`, with `/group addperm guest tshock.synclocalarea`.
   * This command may be removed at any time in the future (and will likely be removed when send tile square handling is fixed).
 * Add FishOutNPC event handler, which is called whenever a player fishes out an NPC using a fishing rod. Added antihack to Bouncer, to prevent unathorized and invalid mob spawning, by checking player action, NPC IDs and range. (@Patrikkk, @moisterrific)
+* Fixed smart door automatic door desync and deletion issue. (@hakusaro)
 
 ## TShock 4.4.0 (Pre-release 8)
 * Update for OTAPI 2.0.0.36 and Terraria 1.4.0.4. (@hakusaro, @Patrikkk, @DeathCradle)
diff --git a/TShockAPI/Bouncer.cs b/TShockAPI/Bouncer.cs
index 3559303f..09c06f3c 100644
--- a/TShockAPI/Bouncer.cs
+++ b/TShockAPI/Bouncer.cs
@@ -561,6 +561,7 @@ namespace TShockAPI
 
 			bool changed = false;
 			bool failed = false;
+			bool doorRelated = false;
 			try
 			{
 				var tiles = new NetTile[size, size];
@@ -592,6 +593,11 @@ namespace TShockAPI
 							continue;
 						}
 
+						if (newtile.Active && Terraria.ID.TileID.Sets.RoomNeeds.CountsAsDoor.Contains(newtile.Type))
+						{
+							doorRelated = true;
+						}
+
 						// Fixes the Flower Boots not creating flowers issue
 						if (size == 1 && args.Player.Accessories.Any(i => i.active && i.netID == ItemID.FlowerBoots))
 						{
@@ -705,7 +711,8 @@ namespace TShockAPI
 				}
 				else
 				{
-					args.Player.SendTileSquare(tileX, tileY, size);
+					if (!doorRelated)
+						args.Player.SendTileSquare(tileX, tileY, size);
 				}
 			}
 			catch