Describe The Bug
When an update metadata job is running, clicks on checkboxes are very slow when they register but mostly they don't register.

My flow is generally

1. Import 20 or so files from the unsorted, unscraped mess.
2. Go to the unscraped tab, select them.
3. Use the multi-comic scraper to iterate through the unscraped comics
4. Go back and manually fix up any that scraped with odd data
5. Update metadata
6. Organise

Step 5 usually takes a long time, this will be dependent on the machine and the drives that they're stored on, etc.

While step 5 is running, I re-select the (now unselected) comics so that I can organise them when the metadata job is complete.

To Reproduce The Bug
Steps to reproduce the behavior. Please be as complete as possible and describe the exact steps and values used to cause the error:

1. Select a few larger cbz files (in my screenshot below I've selected 12 * 250mb+ volumes of Chew)
2. Run an update metadata job
3. While the job is running, attempt to re-select the same files

Expected Behavior
Checkbox selections should remain responsive.

Operating System
Where is ComiXed running?

• Windows
• Linux (any distro)
• MacOS
• Docker on Unraid (Intel i5 6600, 32gb)

Database
What database is ComiXed using?

• Postgres
• MySQL/MariahDB
• H2 (embedded, generally unsupported)
• Other (please provide the name in the bug description)

Browser (If A Web Issue)

• Chrome
• Firefox
• Safari
• Other (if so, please provide a name)

ComiXed Build Detail:

Source Branch Name: 4c3df118f47b9270ecd0e02d358b050acc213fb9
Build Date & Time: 2025-10-19T20:13:18.000+00:00.
Build Machine Name: runnervmzdgdc.
ComiXed Release Version: 3.0.1.
Last Commit Date & Time: 2025-10-18T22:59:00.000+00:00.
Branch Status: Clean
Remote Branch: https://github.com/comixed/comixed
Database URL: jdbc:postgresql://postgres:5432/comixed
Runtime JVM: 21+35-2513 (Oracle Corporation) running on Linux v6.12.24-Unraid (amd64)

Screenshots
In this video, the update metadata job has been running for over 20 minutes already, on the same 12 Chew volumes that I'm attempting to re-select (in order to organise them once the metadata job is complete). I jiggle the mouse a fair bit just so you can see the video is still working.

Additional Context
It would be helpful to be able to see the progress through the job.