I am currently using Anki version 25.09.5 (217701ba). After updating to version 26.05, I noticed an issue with the deck selector at the bottom of the Statistics window.
When I click on a different deck in the deck selector, the Statistics window does not display the statistics for the selected deck. Instead, it continues to show the statistics for the currently selected deck.
To work around the issue, I uninstalled version 26.05 and reverted to Anki 25.09.5 (217701ba). After downgrading, the Statistics window works correctly again.

Have you gone through the Troubleshooting Checklist – especially #6 video drivers, which is often the fix for the screen not being redrawn properly?
I am able to reproduce this bug on desktop Mac Anki 26.05.
It may be that the Statistics window is simply not being redrawn/refreshed after the current deck has been changed:
- If I select a different deck in the Statistics window, close the Statistics window, and then re-open the Statistics window, stats for the newly-selected deck are shown. This suggests that the current deck is getting switched just fine.
- Looking closely at the Statistics window when a different deck is selected, I don’t see any signs that the window is being refreshed or redrawn, other than a different deck name displayed in the bottom button.
The bug occurs regardless of the Anki video driver setting. I tested with all 3 video driver settings. (I did not perform any of the other Troubleshooting steps.)
I am using a Windows laptop.
In the Preferences window, I tried every available video driver option and restarted Anki after each change. Unfortunately, none of them resolved the issue.
I found that the issue I’m experiencing is related to my AMD graphics card. I tried several solutions I found online, but none of them resolved the issue.