Some outlines seem to be missing sometimes...

[MarkoSchuetz]

Describe the bug
Using xiehanzi HSK 3.0 I sometimes have missing outlines. For example, right now I was looking at the card in HSK level 3 for 乐观. The outline for 乐 was there, but the one for 观 was missing and the input field remained empty. But as I wrote this I was then looking at the screen again and suddenly the outline had appeared.

To Reproduce
I do not know a way to reliably reproduce this behavior.

Expected behavior
I expect the outlines to appear.

Screenshots

Smartphone (please complete the following information):

• Device: Huawei Matepad Pro 10
• OS: HarmonyOS 4
• Browser Ankidroid
• Version up-to-date

[MarkoSchuetz]

Is it possible that this is merely caused by lack of network communications?