My DVD drive is currently broken, so I cannot reproduce this issue at the moment. However, similar reports have been made in the past and we still do not know a definite solution. It seems likely that this behavior is caused by Windows rather than WinMerge itself.
Merge remote-tracking branch 'upstream/master' into jp
Update 7-zip to 26.00 (2)
Merge remote-tracking branch 'upstream/master' into jp
Use bovirus-provided Italian.isl for Inno Setup installer
Fix issue #3234: [FEATURE] Add delete 'ALL'
Update Polish.po
Update FilterExpression_test.cpp