When going to download a file from a website,if I try to change the filename from what the website gives to something custom that I can recognize the keyboard produces random characters instead of what I type, and it is different each time, I don't get the same characters if I delete what has been typed in and start again, I get a new set of random characters. In the attached photo I am trying to change the Epson filename to just Printer and all I get is gibberish. I am on Windows 1903 OS Build 18362.267 and the latest version of firefox. This happens on my Acer laptop and my Surface Pro 4 with different websites.It works OK with MS Edge, I can change the filename without issue and the keyboard works as expected in Word, Excel etc. Not sure if it is a problem with Firefox as presumably the Save File Dialog is a Windows dialog box, but the same save file dialog box works OK in Edge so I don't know. I have tried Uninstalling and re-installing Firefox and deleting the folders within my User profile folder etc but the problem persists. Wondering if anyone has any thoughts?