I've noticed that Renjoh Desperado's thumbnail is still the first volume cover on the front page, search etc. Although the 3rd one is the current one on the page (so it never changed to the 2nd one either which was used for a while). How do I fix that? I'm pretty sure this happened before once to something I worked on a long time ago, but I don't know how that was fixed.
@Yatsuki
Oh that's good, was that the case for the last couple of updates too? Then it must be a problem on my end only. How do I fix that... My browser clears all the data whenever I close it and yet the thumbnail hasn't changed in the last 2-something weeks. It's also the 1st cover on reddit for me somehow, just checked.
@FBI-kun
It's possible that you whitelisted Mangodex from clearing cookies when you close your browser. You could try manually deleting them from your browser's preferences page.