Heading Oscillating Between Single and Two Lines on Outline Sidebar

[zichenzhang04]

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Describe the bug
When hovering over a single-line heading in the outline sidebar, the heading oscillates between a single-line and two-line view, causing a flickering effect.

To Reproduce
Open Typora and navigate to a document with multiple headings.
In the outline sidebar, create and hover over a <h3> heading called "Discrete Latent Representation."

The heading "Discrete Latent Representation" changes to a two-line view and then switches back to a single-line view, repeatedly oscillating.

before:

after:

Expected behavior
When hovering over a single-line heading in the outline sidebar, the heading should remain as a single-line without flickering or switching to a two-line view.

Desktop:

• OS: MacOS Sonoma 14.1.1

Typora Version
Version 1.8.10 (7132)