Explorer++ Hangs when trying to sort on columns

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I am editing photos and have set-up three columns:

Date Taken
Date Created
Date Modified

Clicking on any heading, in order to change the sort order, causes Explorer++ to hang. This can only be resolved by forcing Explorer++ to stop in Task Manager (End Task), This issue does not occur in File Explorer. There are about 1600 photos of 5Mb each in the folder.

There are some sub-folders, with around 2,000 photos, total size 7.9Gb. I do not sort on these.

Explorer++ version 1.4.0.1974 dev (64-bit build)
Build date: Mar 7 2023 22:06:48

Windows 11 23H2 (OS Build 22631.4317)