When an update is done to a collection, all open collection contact sheets with a custom sort method (1:… 2:… etc) reverts to one of the main sort methods (Capture Time, Modification Time… Arrangement).
How to reproduce this behaviour:
1: Open three collections in three contact sheets (C1, C2 & C3)
2: Change the sort method like this: C1 - Filename, C2 - 10: Folder/Filename & C3 - Capture Time (C2 can be any custom sort method)
3: Perform an update to a collection, like adding or removing an image. It does not to be in any of the three collections C1, C2 or C3
4: Verify that C2’s contact sheet has reverted to the Arrangement sort method. C1 and C3 hasn’t changed sort method
If C2’s sort method is first changed to one of the main methods (like Filename, Capture Time etc.), and the changed to a custom sort method, the sort method reverts to the previous method (like Filename).
Furthermore, if C2’s sort method has been changed to different custom methods successively, it will revert to the last main sort method selected before the custom sort methods.
Sys Info:
macOS 10.15.7
PM+ 6.0 build 6424
/Michael