Thank you all for the answers. I was not aware of previous issues with that plugin.
I will keep using it as in general it is very useful, now I just know what to do when I suspect that not the whole page was rendered.
As I wrote before, I had another issue (page was using external system for booking appointments, display calendar etc) and I think it is more serious issue, because it makes the whole page unusable at all. I will probably report that, however maybe it would be simpler/faster just temporarily disable the plugin.
As suggested, you can fix it yourself by manually editing what they block on the page, or do a blanket fix, and just whitelist Bitcointalk.org in Ublock. If you whitelist it all, you can still disable forum ads via the forum settings. Ublock origin isn't doing too much on here anyhow, it only really slows it down, although you probably don't notice the effects since Ublock Origin is fairly good in terms of performance.
That's the beauty of Ublock though, the list that they use to block things, is public, and you can edit it. Plus, you have the whitelist feature, which probably is good enough for the forum since we don't have too many things that are annoying in the first place, and even if you deem something annoying, anything that Ublock, blocks by default can be disabled in the forum settings.
