I only discovered the wonders of hot reloading recently. To be honest it crashed the first and every time I tried it with this particular tilesource. Script files and such reload perfectly fine though. I noticed sometimes the error is different:
Assertion failed: hull.m_Count <= 16, file ..\src\box2d\Box2D\Collision\Shapes\b2GridShape.cpp, line 176
I'm on Windows 10 if that makes a difference. I can add someone there to the project in question if that helps.