Timestamps only show the number, but not whether it's minutes or hours
I think that might be a locale problem. My system language is set to Polish.
I spent a couple of minutes looking at the red circle until I understood what you meant lol It's probably a translation error; it shows correctly in German.
Yes, that's an open issue affecting the Polish locale in particular: https://github.com/dessalines/jerboa/issues/539
https://github.com/dessalines/jerboa/issues/539