Another interesting thing – decided to install Twenty Twenty theme as it definitely uses the old style of theme editor.
I can update the logo in there – but when it gets tot he “crop” option it displays the old image, and if I “skip cropping” it actually uses the old image, even though I removed it from my media gallery. If I “crop” it and just select the whole image, then it uses the new one.
It is using the new one when I go back to a modern theme (Fotografie Blocks), but there’s still no option to update/replace it in Styles -> Blocks -> Site Logo so it seems like I would need to use that other option if I needed to update it in the future (hopefully not).
I’m not sure if this helps with troubleshooting why it happened in the first place, or if there’s any way I can “reset” that option so it’s fixed going forward?
Thanks again,
Jesse