Further to this post about MacOS Catalina, I thought I’d mention that iOS 13 doesn’t work well with Logos:
I can’t open the library view (whether from the task bar or from the new tab view) without the app crashing.
There’s also a couple of more bearable issues with opening new tabs from links - they will always open in the first slot and be accompanied by a visual glitch in the animation.
I’ve only just started playing with it so those are the only issues spotted thus far but the first seemed serious enough to warrant a warning anyway. Guides seem to work fine as does the normal reading view, but that’s small consolation, I guess.