I managed to convince DrRacket to issue the following warning to stderr.
2022-11-06 18:25:05.521 DrRacket[45378:94387379] Warning: Window move completed without beginning
I suspect this is related to a MacOS software bug, since I found a workaround to a similar warning in some Tk source (https://core.tcl-lang.org/tk/info/9726c0e9a5004ed3). When I saw this, I opened many racket files at once in DrRacket from the terminal, and at the time I was seeing multiple copies (3?) of the DrRacket icon in the Dock. I killed (via command Q) the ones that seemed irrelevant to the task at hand.
I managed to convince DrRacket to issue the following warning to stderr.
I suspect this is related to a MacOS software bug, since I found a workaround to a similar warning in some Tk source (https://core.tcl-lang.org/tk/info/9726c0e9a5004ed3). When I saw this, I opened many racket files at once in DrRacket from the terminal, and at the time I was seeing multiple copies (3?) of the DrRacket icon in the Dock. I killed (via command Q) the ones that seemed irrelevant to the task at hand.