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Minor things I thought I reported in some issue linked to issue #56382 but maybe not. - "Open" is the default button so it should not have a mnemonic - "Close" should be called "Cancel" (it is not the opposite of "Open"!) and it should not have a mnemonic either
Seems to be fixed, the buttons are OK and Cancel, no mnemonics. OK is the default one and ESC correctly closes the dialog.