Premiere Pro 2025 introduced light mode (which is as bright as the sun, but I've found it useful). When in light mode, Premiere forces Excalibur's background to appear light as well. Since the Text in Excalibur is white, it's almost impossible to read anything when unsheathed, or in settings.
I'm not sure if there's a simple way to automatically fix this, but I would love an option to switch all text to black instead of white in the meantime.
Thank you so much for your continued support for Excalibur! I love this plugin so much, and it's my favourite thing about Premiere Pro.