Hello, I'm on Ubuntu 16.04, on mozilla 59.0.2, and when i launch a game, I have this I tried also to download chrome, but with it my computer is really slow (I don't understand, I have 8Go of RAM), and then it's the right part that I don't have... Whatever, on mozzila, when I scroll up or down, I might be able to have the map, see and move my token, etc, but after a while (from 5 to some times 30 seconds) it's back to the image above. Javascript is enabled. I have no anti-virus, and the only add ons I have are Ad block and Video Download Helper (I disabled both, and I have none on Chrome, because I downloaded it just to try to run roll20). This is the log from when I launch the page (sorry it's in french) So I guess the problem is either on the red or the yellow lines. The red lines are about the settings of the page, that don't allow the loading of a resource to "self" (in english in the sentence). The first yellow line is in english so i don't need to translate it. The last one says like "this website seems to use a position effect related to the scrolling. This effect might not be working properly with the asynchronous scrolling. Consult <a href="https://developer.mozilla.org/docs/Mozilla/Perfor" rel="nofollow">https://developer.mozilla.org/docs/Mozilla/Perfor</a>... to get more details about or discuss about tools or functionalities related." So I guess it's why some times I can see when I scroll, and some times not, because of the asynchronous scrolling working not properly. I went on the link, but there is some coding, and it seems nothing that would solve my problem (from my sight). If you can have any clue on who to get roll20 working properly for me, I'd be grateful :)