Weird pop-up window - "the nameless one"

On EACH on my player's Roll20 games. Can't close it. Minimizes like a Character Sheet - when you double click the Title Line.  The contents of this list appear to come from PC listed in the journal  I know we are not the only ones with this problem. 

Hi CrimsonRaven! Hmm. I have never seen anything like this. Some questions: What causes this to pop up? What character sheet is installed in the game? Could it be the action of a script? How about a userscript (browser script)? Does it occur when running a private browsing window? What confuses me most is the appearance. It does not have any of the interface elements common to character sheets or handouts. AFAIK, there is no way to generate an internal window without those elements.

I’d like to know the Mods installed in the games. Can you screenshot the Mods console with the list of installed Mods, please? BTW I’ve never seen anything like this since 2014 when I started using Roll20!

That isn't even a Roll20 vtt window, so it's NOT coming from R20 or anything that could be made in R20 (Mods, custom character sheet, compendium content, etc). I'd look at what extensions you have installed and try using incognito/privacy mode as that disables the vast majority of extensions. Alternatively, are you sure it's a pop up? and not an image that is actually on the map?

Keith The Legend.  To the rescue again.  Here are the answers to your questions. What causes this to pop up?    A: This appears on my player's screen a soon as he loads the VTT.  He uses a Firefox browser What character sheet is installed in the game? A: D&D 5e (2014) Could it be the action of a script? How about a userscript (browser script)? A: I have mods installed but no "Scripts" (unless scripts are placed within mods) .  Note I have not installed a mod in 6 months.  No changes.  Does it occur when running a private browsing window? A: Doesn't appear to be the case.

Andrew.  Thanks for your response.  The Mods are Mod Library / MacroMover.js / EncounterHelper / TableExport / TokenMod / Token Action Maker / RecursiveTable / ButtonNew / hiddenRoll

Scott, thanks for your feedback.  Yes, but "pop-up" was misused in my Title.  It's static.  Sits there when you log in.  Behaves like a character sheet in so far as how you "minimize" it.   Also, yes this is Roll20, I just zoomed in - he was sharing his screen remotely.   You might be on to something with respect to extensions - he recently has to RELOAD ALL of them, he says "from memory." 

Note this is the VTT of a single player (see the apostrophe - I put it in the right place) across three D&D5e Roll 20 games.   The contents of the window, change with each game, reflecting the character sheets added to each game.  "The Nameless One" is a forgotten realms NPC.  However, I have never used him in any of these games. 

My only guess is that if it is something that moves with the Roll20 browser window (I.e. if you move the browser window, the image moves too), that it must be something being externally generated by a user script. The minimizing thing is the clincher. You couldn't create something like that if you tried, using the tools in the Roll20 VTT, and the Roll20 API. Handouts and Character sheets (and PDFs) are the only thing that users can create, and they use standardized tools to do so. A user script (a special kind of script installed either as a browser extension, or using a utility like TamperMonkey or GreaseMonkey) could create something like that. Beyond20 (which sends rolls from DnDBeyond to Roll20) works like that. Without knowing more about your friend's computer, that would be impossible to tell. The fact that this is only happening on their computer, and there have never been any reports of something similar lead me to believe that there is something local going wrong there. Your player should file a  Help Center Request , if there is not something like that going on with their system. It's possible they might be able to tell if foreign code had been injected into the game. All I can say is that there is nothing here that looks like the phenomenon is being created by native Roll20 code.

CrimsonRaven said: Scott, thanks for your feedback.  Yes, but "pop-up" was misused in my Title.  It's static.  Sits there when you log in.  Behaves like a character sheet in so far as how you "minimize" it.   Also, yes this is Roll20, I just zoomed in - he was sharing his screen remotely.   You might be on to something with respect to extensions - he recently has to RELOAD ALL of them, he says "from memory."  When I said it wasn't a Roll20 window, I didn't mean the entire VTT. I meant the popup. It is not styled like any existing R20 window and the pieces that are missing are not editable by a character sheet or Mod (aka script). The only way this could be getting shown is via some sort of 3rd party extension.

My advice is to always launch Roll20 games in a Chrome Incognito / Firefox Private Browsing window. Always.  It saves you from all sorts of trouble that you don't need. 

This was caused once before by a Firefox extension for Roll20. The extension had some generic misleading name like "roll20 dnd sheet".