864: Ops window, image selector in preview section skips by 2 #877
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Issue
Closes #864
Description
Disables then enables the spin box while the operation preview is being generated.
Testing
Added a test to check that
setEnabled
is called twice when the preview is generated.Acceptance Criteria
Change the preview index value with the left-mouse button and check that the value only increases once for the operations mentioned in #864
Documentation
Updated the release notes.