I left the review screen open while I went away from the computer, I came back, answered the card and got the timebox popup appear which had a negative number of cards studied (see screenshot).
I know that I went away at 12:01 and returned before 12:12, also my timebox is 25 minutes, but I don’t know how to get the revision history on the browser so that I can be more helpful.
Maybe someone here can help me with this.
Screenshot
Anki debug info
Anki 2.1.56 (07fd88dd) Python 3.9.15 Qt 5.15.2 PyQt 5.15.5
Platform: Windows-10-10.0.22621
Flags: frz=True ao=True sv=3
Add-ons, last update check: 2023-02-03 08:33:32
===Add-ons (active)===
(add-on provided name [Add-on folder, installed at, version, is config changed])
'' ['slackers_delight', 0, 'None', '']
Advanced Browser ['874215009', 2022-09-26T21:28, 'None', '']
Auto Ease Factor ['1672712021', 2021-03-21T15:11, 'None', mod]
Autosync 21 ['1726633659', 2019-03-08T20:58, 'None', '']
AwesomeTTS - Add speech to your flashcards ['1436550454', 2023-01-13T00:54, 'None', '']
Deck name in title 21 ['699175524', 2019-05-31T22:05, 'None', '']
FSRS4Anki Helper ['759844606', 2023-01-30T05:05, 'None', '']
Highlight Search Results in the Browser ['225180905', 2021-03-10T14:06, 'None', '']
Load Balanced Scheduler ['208879074', 2018-10-04T21:06, 'None', '']
Mini Format Pack ['295889520', 2018-07-24T14:45, 'None', '']
Minimize to tray ['85158043', 2022-04-30T14:57, 'None', '']
More Decks Stats and Time Left ['1556734708', 2022-10-09T09:05, 'None', '']
MorphMan for Anki 21 ['900801631', 2023-01-10T17:01, 'None', '']
Review Heatmap ['1771074083', 2022-06-29T22:43, 'None', '']
Searching PDF Reading Note-Taking in Add Dialog ['1781298089', 2022-08-15T04:22, 'None', mod]
Syntax Highlighting for Code ['1463041493', 2018-10-06T22:31, 'None', '']
Transfer scheduling data from one card to another ['94685914', 2020-09-18T06:23, 'None', '']
autoLapseNewInterval automatically adjust the new interval after a lapse ['372281481', 2022-09-28T04:26, 'None', mod]
avgEase for Anki 2141 ['1129477042', 2021-06-27T08:58, 'None', '']
===IDs of active AnkiWeb add-ons===
1129477042 1436550454 1463041493 1556734708 1672712021 1726633659 1771074083 1781298089 208879074 225180905 295889520 372281481 699175524 759844606 85158043 874215009 900801631 94685914
===Add-ons (inactive)===
(add-on provided name [Add-on folder, installed at, version, is config changed])
Auto Advance automatically show answer flip card audio play repeat speed ['1747534155', 2019-11-22T01:57, 'None', '']
Incremental Reading v4103 ['935264945', 2019-04-21T09:54, 'None', '']
load balancer ['1417170896', 2020-08-05T20:58, 'None', '']