When using the website, the running study time shown on the study page is longer than it really should be. For example, after studying for five minutes the clock shows 10 minutes. If I then go to the dashboard for a moment and back to studying again, the time will start counting from 5 minutes. Perhaps it is not pausing while reviewing answers as it always has done? It seems like the time is getting logged accurately in the background, just displaying wrong.
It’s probably not relevant to this issue but on the off chance that it could be related to bugs, I’ll mention it: my subscription has lapsed recently. I’ll restart it when I have got through my review queue.