Board Thread:Technical Updates/@comment-126761-20180413204646/@comment-126761-20180416144335

So far as I am aware the limit only stopped working for a few months. We've never prevented people uploading images that were larger than that resolution, but it was generally immediately noticeable that no thumbnail was being generated.

I've just been informed by the team that the limit will be increased to 60 megapixels in tomorrow's release, which should significantly help out - and we'll be looking at further tweaks based on the effects of that change (including introducing clearer error messaging). No action should be required to take advantage of the increased limit.