Describe the bug

If the end of an SQL statement is a comment, PHPMyAdmin will repeatedly inject a semicolon onto the end each time it is edited.

To Reproduce

Steps to reproduce the behavior:

1. Go to for latest demo server https://www.phpmyadmin.net/try/ and use MariaDB
2. Click on SQL
3. Enter SELECT 1 -- foobar
4. Press Run
5. Press "Edit" then "Run" again
6. SQL is now shown as SELECT 1 -- foobar;;, repeating step 5 will add another ; on each time.

Expected behavior

SQL should be SELECT 1 -- foobar;, or ideally I suppose, leaving my SQL unaltered and not adding or removing any semicolons.

Screenshots

Additional context

Apologies for reporting such a trivial thing!