We have a system badge with the some other system badges that were marked as related.

After updating from an earlier version of 3.11 there appears to be some changes to badges/classes/output/issued_badge.php 

When trying to view the issued badges for system badges with related badges the system would output an error with the debug message below:

Default exception handler: Coding error detected, it must be fixed by a programmer: Context does not belong to any course. Debug: 
Error code: codingerror
* line 5758 of /lib/accesslib.php: coding_exception thrown
* line 1856 of /lib/accesslib.php: call to context->get_course_context()
* line 210 of /badges/classes/output/issued_badge.php: call to is_guest()
* line 326 of /badges/renderer.php: call to core_badges\output\issued_badge->export_for_template()
* line 466 of /lib/outputrenderers.php: call to core_badges_renderer->render_issued_badge()
* line 70 of /badges/badge.php: call to plugin_renderer_base->render()

The trace seems to indicate the issue to the is_guest call on line 210 of issued_badge.php which uses a $context variable set earlier in the file. This is part of the code block under // Field: Related badges.{}

As a test, I removed the call to the is_guest function on 210 and the badge page rendered properly. This is the only code block in the issued_badge.php that seems to calls this function or use the context.