Plugin Search Issue: Trimming of Keywords with Ampersand (&) upon Page Refresh

[adhun]

I have encountered a peculiar issue with the plugin search functionality in the WordPress backend. When performing a plugin search using keywords that contain an ampersand (&) character and refreshing the page twice, the keywords are getting trimmed, resulting in incomplete search results.

Steps to Reproduce:

1. Access the WordPress backend.
2. Navigate to the Plugins section.
3. In the search box, enter keywords that include an ampersand character, e.g., "search & replace"
4. Press Enter or click the Search button.
5. Note the search results.
6. Refresh the page twice by pressing F5 or using the browser's refresh button.
7. Observe that the search keywords are being trimmed to "search" only.
8. The search results are now incomplete, as the full keywords were not used for the search.

Expected Results:
The plugin search should retain the complete keywords, including the ampersand character, upon page refreshes. This would ensure accurate and consistent search results, even after multiple page refreshes.

Actual Results:
Upon refreshing the plugin search page twice, the keywords containing an ampersand (&) are trimmed, resulting in incomplete search results.

Reproducibility:
Consistently reproducible.

[adhun]

On further inspection i found that on wp_admin_canonical_url function url is not properly encoded before passing to javascriptt.

[adhun]

On further inspection i found that on wp_admin_canonical_url function url is not properly encoded before passing to javascript.

[adhun]

On further inspection i found that on wp_admin_canonical_url function url is not properly encoded before passing to javascript. Patched by adding urlencode function.

[adhun]

All of the above patch files are same, i accidentally uploaded it thrice.