Thank you very much @iGottic for your bug report. The place file was very useful to dive into the problem. There is a known problem with our automatic size implementation.
We have another bug where we are tracking this issue. So I will close this one. Please follow up with AutomaticSize on scrolling frame with aspect ratio and grid not large enough for updates. Since we don’t have a clear timeline to fix this, in the meantime, when using ScrollingFrames/AutomaticCanvasSize and a UIGridLayout, please define a UIGridLayout/CellSize using only the offset and not the scale part of the UDim2.