[Bug Report] 开启选单时，依然会点击到下层的预览视窗拉条

[hbl917070]

Prerequisites

• There isn't an existing issue that reports the same bug to avoid duplicates.
• The provided information offers a minimal reproducible example of the bug.
• For Q&A, please open a GitHub Discussion instead.

Describe the Bug

开启选单时，依然会点击到下层的预览视窗拉条
如果开启的是「公式」的选单，那么游标触碰到预览视窗的拉条时，还会导致选单消失

重现方法：
使用官网的范例页面

bandicam.2024-10-12.20-21-53-592.webm

Reproduction Steps

No response

System Information

No response

Contributing

None