Sleazy Fork is available in English.
Shows just fullsize Image with hotkeys & without pop-ups on many image-hosting sites
If just those two keys aren't working and other keys work fine - it's probably your other extension or userscript messing hotkeys up (that's the main reason for messing things up independently)
Just checked - hotkeys work for me fine in Chrome & tampermonkey.
I will fuss around with my scripts; I figured it was likely a hotkey conflict somewhere. Thanks Owyn.
Hotkeys no longer working
I've been unable to get hotkeys (R to revert to original image link and P to open the configuration menu) under any circumstances for a couple weeks now. I've tried running the script in incognito mode with everything else disabled and I have the same problem. Any way I can fix this?