Incorrect embedded document size

[WaveF]

Steps:
1. Drag the blank.afdesign document (an empty document saved with size 400x300px) and drop to main document
2. Double-click the embedded document, add an artistic text object with size: 728x195, and then insert an Artboard from selection
3. Go back to the main document, you'll see the embedded document's size is 400x300, and render in wrong position & size
    - The "Page Box" has only one option: "TrimBox"
4. Try to save the document, a warning msg shows: "Save failed because the file could not be written to."
5. The file has been saved in fact, but can't be open, this msg shows: "Failed to open file, the file type is not supported."
    - Please see attachment: adbug-1111a.afdesign

6. Relaunch Design and a dialog ask for restore the file, I choose yes, and I save it to the same location with this name: adbug-1111b.afdesign
    - This file can be saved without CAN NOT SAVE warning, but the layer size still buggy.

7. Close the file(adbug-1111b.afdesign) and Re-open again, I found the "Page Box" has three options now: "TrimBox", "Minimum Content" and "Maximum Content" which is correct. But when I edit the text in embedded document and then go back to the main, I got the render result as screenshot above, text's x position has a little negative shift, tail shows when reposition the embedded document layer, and it's very close to expect render result this time. I save the file with naming: adbug-1111c.afdesign (also attached).

OS: MacOS 10.15.7
Software: Affinity Designer 1.10.4

adbug-1111a.afdesign adbug-1111b.afdesign

adbug-1111c.afdesign

[Pauls]

I can get rendering problems but the file is saving for me. I also cannot open adbug-1111a.afdesign - is that a corrupt file for you as well?

If you could provide a screen video going through the steps that would help us a lot!

[walt.farrell]

50 minutes ago, Pauls said:

. I also cannot open adbug-1111a.afdesign

That one downloads as an empty file, 0 KB