GlossaryTerm: Fix bug with jittery hover effect

[dmitriyrotaenko]

Hi!

First, thank you very much for the plugin. For us, your solution seems to be the most promising and full-fledged on the market right now! We're still exploring it though.

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Problem

I noticed that it's possible to cause the so called 'doom flicker' or jittery effect when I hover over the edges of a glossary term. While it's a non critical issue, I assume the UI is better without it 😀

Screen.Recording.2026-01-12.at.23.31.35.mov

This hover state causes a layout shift because the border is added and removed when the cursor is at an element edge.

Fix result | What's done

• Made element border transparent instead of removing it.
• Added an underline offset. This way the dotted border of the term and default link underline are on the same level and nicely overlap on hover.

Screen.Recording.2026-01-12.at.23.56.24.mov

Tests

Not sure whether I should test anything here. Please let me know

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