I tried with one, it didn't work - that is, it posted fine, but didn't animate, so I removed it, so I have to try again, let's do it now.
Edit: Hmm, weird, it's working now. Could it be a section specific misconfiguration? Or just a temporary glitch that I experienced?
Let's try another:
It's not working with this one. It converted the file to a much smaller size and something went wrong in the process. The thing is, the first animated GIF is larger in size, at 697 KB, and wasn't converted, I just saved both and the first one kept its original picture size and file size, whereas the second one didn't and it was only 409 KB. It was bigger in picture size though (711x800 vs 420x270), but it doesn't exceed the GIF picture size limitations, which is the same for other picture files. Yet, it was converted to something smaller, from 711x800 down to 444x500 and down to only 85.5 KB in file size.
Why is different criteria being applied?