Having an ampersand "&" in the JQL of a Count in a Filter Count gadget breaks functionality

Issue Summary

Having an ampersand "&" in the JQL of a Count in a Filter Count gadget breaks functionality

Steps to Reproduce

1. Add a Filter Count to your dashboard.
2. Set it to any filter or project and
3. Add a Count, setting the JQL that includes a field value that includes an ampersand.
4. Save changes, you will see the count value appear in the gadget.
5. Press/Click over the Count number

Expected Results

The user is redirected to the Advanced issue search with the gadget JQL + Count JQL indicated and the issues listed/shown.

Actual Results

The user is redirected to the Advanced issue search but left with a broken JQL, breaking at the point of the Count JQL where there is an ampersand. As shown in this video, this seems to be a URL encoding problem as replacing "&" with "%26" (the URL-encoded value for "&") will give the expected result when Clicking/pressing over the count value but it will break the actual count shown (so it is not suitable as a workaround):
Test dashboard - Jira.mp4

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available