Can't delete aliases in dark mode on Firefox

I use Firefox with the dark theme enabled, which causes MiaB to automatically use the “inverted color” dark mode theme as well. When I click the delete button in dark mode to remove an alias, an overlay appears, but no confirmation box.

I just disabled the dark theme (causing MiaB to use the standard light mode) and tried again, and this time, the confirmation box appeared.

Is there any configuration option to permanently disable dark mode? I find it difficult to use on my phone.

Please report this as a bug on GitHub: