Show "Updated issues" on the profile page
Currently (r17844 and later), you can see the issue tracking table on the profile page. You can see the number of assigned and reported issues in the table and you can quickly access the corresponding issues list of each value.
I propose to add a new row "Updated issues" to the table. The row shows the number of issues the user updated (in other words, the number of issues the user involved). And each value is linked to issues list filtered by "Updated by" filter introduced in Redmine 3.4 (#17720).
The feature will provide quick shortcuts to "Updated by" filter and useful to see the issues which the user involved.