2.1.26 makes some answers appear blank

quantonium's Avatar


14 May, 2020 01:43 PM


After updating anki to 2.1.26 yesterday, I have encountered a problem..
Sadly, I can't remember what version I had before that (though it wasn't old).

When clicking the answer button (space), there is a random chance that the answer won't appear, until I somehow interact with the card. Like marking it, cliking certain parts of the screen, clicking undo etc. This happens perhaps in 1 of 10 cards, but is very inconsistent.

In addition, there is sometimes a flash of the previous card appearing, before the answer appears.

I have tried uninstalling and installing again,
I have tried diabling all addons.
I have also tried turning off hardware acceleration, but then I just get an error when booting (about openGL), and it just reverts.


  1. 1 Posted by addons_zz on 14 May, 2020 07:22 PM

    addons_zz's Avatar

    What are the contents of your card templates? Card Templates

  2. Support Staff 2 Posted by Damien Elmes on 15 May, 2020 12:00 AM

    Damien Elmes's Avatar

    Please try the 'angle' video driver: https://changes.ankiweb.net/#/known-issues

  3. 3 Posted by quantonium on 15 May, 2020 05:11 AM

    quantonium's Avatar

    Thanks, that seems to have solved the problem.. Is this a permanent solution? Or do I have to regularly use the angle feature?


    .card {
     font-family: arial;
     font-size: 20px;
     text-align: center;
     color: black;
     background-color: white;

    hr {
      display: block;
      margin-top: 0.5em;
      margin-bottom: 0.5em;
      margin-left: auto;
      margin-right: auto;
      border-style: solid;
      border-width: 0.2px;

    <div style="font-size: 13px; margin-bottom: 15px;">{{FrontSide}}</div>
    <div style="color:#0a68ff">{{edit:Back}}</div>
    <div style='font-family: Arial; font-size: 16px; color:#a8a8a8'; >{{edit:Extra}}</div>

    It would still be interesting to figure out why this problem occurred to begin with.

  4. 4 Posted by addons_zz on 15 May, 2020 03:40 PM

    addons_zz's Avatar

    Looks like the new version of QT Anki uses is bugged and cannot use hardware accelleration on your computer. By setting angle, you force QT to use software rendering, (which does not use your GPU, but CPU (slower) to draw the Anki interface).

  5. Support Staff 5 Posted by Damien Elmes on 18 May, 2020 05:58 AM

    Damien Elmes's Avatar

    ANGLE is not software rendering - it is a Direct3d shim AFAIAA.

Comments are closed, but you can start a new discussion.

Keyboard shortcuts


? Show this help
ESC Blurs the current field

Comment Form

r Focus the comment reply box
^ + ↩ Submit the comment

You can use Command ⌘ instead of Control ^ on Mac