Fixed already on your website.

Just run 'Flush the caches' in the future.

If you still have the problem you might want to try version 3.3.3 of Tidypics. Problem with version 3.3.2 had been that the HTML5 uploader language shown wasn't necessarily the user's selected language because the way I tried to "fix" a deprecation issue introduced with Elgg 3.1 was not working as I thought (i.e. caching of uploader language files wasn't user-specific but instead only one language file got cached and that could have been different from the user's choice).

Update: It doesn't happen if I "Like" my own posts, only when "Liking" someone else's

hypeDiscussions works for Elgg 2.3 (has't been updated in over 3 years).

@Wogker It has been updated for Elgg 3 but never released here: https://github.com/hypeJunction/Elgg3-hypeDiscussions. Development has been stopped (at least by Ismayil himself), so it might be that the updated version of hypeDiscussions (and other updated hype*** plugin versions for Elgg 3 only available at github) is not free of bugs. I'm not using the hype*** plugins myself, so I can't speak from own experience what problems might occur on Elgg 3.

Yes, the version I am running is from https://github.com/hypeJunction/Elgg3-hypeDiscussions, I am aware that this is not available here, but I was looking for anybody that may have also run into it.