Avatar sizes is changed after visiting QnA topics

[exetico]

I've spotted a small bug.

1. Visit a QnA-formatted topic
2. Navigate to another topic (not QnA-formatted)
3. Avatars are now 25px in size, instead of 45px

Here's one HTML example, with 25px sized avatars:

<img alt="" src="/letter_avatar_proxy/v4/letter/v/ce7236/25.png" title="...removed..." class="avatar" width="25" height="25">

And here's the default HTML size:

<img alt="" src="/letter_avatar_proxy/v4/letter/v/ce7236/45.png" title="...removed..." class="avatar" width="45" height="45">

(It's not only limited to the "Letter avatar proxy" avatars. It's also the normal avatars.)

By reloading the page (F5), it's all good again.