@𝗝𝗮𝗸𝗼𝗯 :𝗳𝗿𝗶𝗲𝗻𝗱𝗶𝗰𝗮: 🇦🇹 ✅ Sorry, missed the train on that as I had to rush out, and then I forgot about it. Now it is invalid. I can upload it somewhere for your preview pleasure.
Also, I had to try again (screenshot attached to this reply instead) . Figured it perhaps were different classes/functions triggered by either file picker or drag-and-drop. Tried to reply to your post below with crying man with dragging the gif in question in to the reply.
You can see already in the preview text that it is about to show a .jpg, whereas (also visible in the screenshot) the image I actually dragged over is a .gif.
Also, I do notice my screenshot, pasted from my clipboard, apparently is uploaded as a .png, which I assume it was from the start. Strange.
For the sake of testing I took a screenshot of your post (above) to clipboard, then clicked "Comment" and finally paste. It looks like that works too!
Ubuntu 20.04, nginx (latest whatever). Just a bog standard install of a VPS. Apart from adding the Erlang stuff to sources it is the default Ubuntu sources. I say that as I am thinking the instructions possibly should include pointers to sources that aren't actually part of the defaults to for example Debian/Ubuntu (which I would consider is the most common Linux distro still).
Even after my clean installs I get lots of these too, saying "Error: n.text is undefined" which I get pretty much always when trying to post either an original post or a reply to a post. Usually the posts are actually posted anyways, but just to make sure I always have to type the post in another tool to ensure I won't lose it.
Also I get lots of 500 error still. Reminder: this is after completely wiping the folders, re-downloading them from stable branch and re-compiling them. You can see the messages in the screenshot. The messages are not related, they just happened to be on the screen at the same time for the screenshot but usually happen regardless of each other (just a lucky screenshot).