I use the default Fallout sheets recommended by Roll20 that have a demiplane option, but we just use the standard, non-demiplane sheet - and for the past couple days they haven't been working. The rolls just don't roll, neither the d20s nor the combat dice modified d6s. Tries making a fresh campaign using the sheet and the bug persists. This isn't just me, it's all of my players (it's a West March) as well, so it is very unlikely this issue is down to browser or cache issues (I did clear it and tried again).