Admin-side JavaScript conflicts usually occur when plugins load scripts globally instead of conditionally.
This leads to overwritten variables or multiple versions of jQuery being loaded.

Open the browser console on the admin page and look for errors. Disable plugins one by one to identify the culprit. Once identified, inspect how the plugin enqueues scripts.

Proper fixes involve using wp_enqueue_script with correct dependencies and loading scripts only on relevant admin screens. Quick fixes like deregistering scripts should be used cautiously.

A common mistake is ignoring console warnings until functionality breaks completely.
The takeaway is that clean script loading is just as important in admin as on the frontend.