Can't install plugin from disk due to case-sensitivity

If you try to install a plugin from disk by opening Settings > Plugins > Install Plugin from Disk…, and the file's extension is not lower-case, e.g. ‘ZIP’, then you can see the archive XY.ZIP in file browser, but OK button remains disabled.

Suspect: com.intellij.ide.plugins.InstallFromDiskAction.FileChooserDescriptorImpl.isFileSelectable method's case-sensitive string comparison. (PC-243.21565.199)

Workaround: change extension case or - since you can't just change the case of a filename on NTFS - unzip the plugin and copy contents to a new zip file with the right case.

PY-77486