I've encountered a recurring issue while working on my map that I believe may be a bug. If I leave my project idle for an extended period (e.g., switching tabs or stepping away from the computer), when I return, the terrain layer — or "background" — disappears completely from the canvas. When this happens, I can no longer resume editing or see any of the terrain I had been working on. The only workaround is to close the editor and re-open the project, but I lose any unsaved work in the process. Attached is a screenshot showing the issue: as you can see, the terrain layer is entirely missing despite everything else still being visible. This bug has made it difficult to work on longer sessions without having to constantly save and reload. I'd appreciate any guidance or fix you might provide! Thank you for your time and support.