https://bugs.winehq.org/show_bug.cgi?id=48965
--- Comment #23 from Marko Friedemann mfr@bmx-chemnitz.de --- Ah, apparently I am not allowed to change status or resolve it as NOTOURBUG.
Anyway, meant to post a link that shows the options mentioned in the comment above: https://askubuntu.com/a/894914. That answer has a screenshot of the settings manager and has highlighted another option, the one that appears to have been the culprit for me is the first one there in that list.
Thanks for taking the time to look into this and help me fix it. M.