Nemo freezes and CPU's usage goes to 100% when moving the cursor over right-click menu options of a file or folder

Distribution

Mint 22

Package version

6.2.8

Frequency

Quite often

Bug description

I don't know exactly what causes it, but when it happens, if you right-click a file and move the cursor through the options, the highlight will not show instantly, and instead freeze, taking some seconds to highlight where you are at. If you continue moving, it will take more time to recover up, and you can see in System Monitor the CPU usage skyrocketing.

It seems to not happen instantly, but after some time. Every time it happened I was working with .cbz files, extracting them and managing its image files. If I close Nemo and open it again, the issue don't occur.

Steps to reproduce

1. Right click a file
2. Move the cursor through the options
3. See it

Expected behavior

Do not lag.

Additional information

My hardware specs are Intel Core i5-7400, 24 GB RAM (1x8GB + 1x16GB) and Intel HD 630 (kernel 6.8.0-45) / NVIDIA GeForce GTX 1050 (proprietary, version 550.107.02). The storage drive I was using when the problem occurred was an 7400 rpm Seagate HDD, but it also happened when right-clicking on folders stored on my SSD.

Here's a video I recorded of the issue. It didn't lagged as hard as before, since it recovers quite fast from the freeze. Earlier on, it would take more than five seconds to unfreeze.

https://github.com/user-attachments/assets/58144756-4255-4c26-83e6-e3970face818

No source file, test, or entry point is named. Start by reproducing the freeze with the listed right-click and cursor-movement steps on Nemo 6.2.8, including after working with .cbz files; done means menu highlighting remains responsive without CPU usage spiking.