The CanvasSizeChangeSignal is never triggered and Canvas::onResize() is never called when resizing the platform window under SDL. To verify, place a breakpoint at https://github.com/GarageGames/Torque3D/blob/development/Engine/source/gui/core/guiCanvas.cpp#L356, run the game and maximize/restore or resize the platform window. The breakpoint should be hitting, but it is not. This one line commit fixes that to match the legacy windows win32 platform behavior.
The CanvasSizeChangeSignal is never triggered and Canvas::onResize() is never called when resizing the platform window under SDL. To verify, place a breakpoint at https://github.com/GarageGames/Torque3D/blob/development/Engine/source/gui/core/guiCanvas.cpp#L356, run the game and maximize/restore or resize the platform window. The breakpoint should be hitting, but it is not. This one line commit fixes that to match the legacy windows win32 platform behavior.