Readability of CAPTCHAs

I’m wondering how readable Duplicati’s CAPTCHAs are? I can’t read them (causing failed operations). Can others? Example:

The issue is tracked here on Github, but it’s not very clear what makes the CAPTCHA’s unreadable on some systems. Captcha is unreadable · Issue #2965 · duplicati/duplicati · GitHub

I always get fairly readable ones, making reproducing the issue tough.

Ah, thanks for the response. (I tried grepping for related issues, but didn’t find any, prob my bad.)

  FYI: I'm now on my new laptop, Dell XPS 13 with 4K hi-def, so that seems to map to the general problem-area other are seeing too.

— Walt