Saving sometimes doesn't work after loading an existing file

[ReFreezed]

Version: 1.18.0
OS: Windows 7, 64-bit

Opening an existing file sometimes leaves the save button greyed out (and Ctrl+S doesn't work) even after making changes. The window title also says "not saved".

[juzzlin]

I tried this quickly and was not able to reproduce. After making changes to a recent file I can save normally. I'll test with the windows build later.

[ReFreezed]

I did some more testing. The save functionality actually only seem to break in one specific case. The problem is with the edge width property, for some reason. Compare the files in this zip: bug.zip

I might add that, after editing a broken file and trying to close the program and it asks whether to save or discard the unsaved changes, pressing "save" there does does save the file.

[juzzlin]

Thanks for the example files! I can now see that there's definitely something weird happening.

[juzzlin]

Fixed in 9532700. Thanks for reporting!