Open the application, and the attached test file: Affinity Publisher - mask to below + release bug.afpub
In the Layers panel (View > Studio > Layers),
- right-click on the top item, labelled “(Ellipse)”,
- and then left-click on Mask to Below.
This produces a combined layer-item labelled “Photo (Image)”, comprising the photo and its elliptical mask.
Click the little triangle at the left of the combined item, to expand it.
The item labelled “(Ellipse)” should now show as the only item selected.
Right-click on the label, “(Ellipse)”, and then left-click on Release.
For me, Affinity Publisher then crashes and terminates, every time these steps are repeated.
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System details:
Affinity Publisher 1.7.3.481
Windows 10 Home (© 2018 Microsoft Corporation. All rights reserved.)
Intel(R) Core(TM) Ì7-7500U CPU @ 2.70GHz 2.90 GHz
Installed memory (RAM): 8.00 GB (7.89 GB usable)
System type: 64-bit Operating System, x64-based processor
Graphics: GeForce GTX 950M
DirectX runtime version: 12.0