Today, I was setting up a new computer and found that my favorite extension, 600% volume booster, has been removed from the Firefox extension store. I looked into it and I found that apparently the extension was injecting aliexpress affiliate links into pages without telling the user. Unfortunately, this extension is the only extension that works for me. I opened the extension up, and I believe I found the malicious script and commented it out. The extension seems to work fine with this function removed, and I found that it was also messing with TikTok video playback, and issue I had been dealing with for the past few months.
After a bit of searching, I found this extension that looks suspiciously similar here