Flashing white screen in documentation

[alexeyfridman]

Description
Flashing light screen on changing documentation chapter.

To Reproduce

1. Go to documentation page, e.g. https://www.utbot.org/docs/java/check-requirements
2. Click another documentation chapter
3. Notice at that moment that documentation area flashes for ~0.1 seconds with white background and then returns back to dark one.

Expected behavior

Smooth switching between chapters in dark style.

Actual behavior

Example: When Copy link button is pressed, nothing is copied.

Visual proofs (screenshots, logs, images)

screenshot of white flashing screen