Although the native breadcrumbs are hidden in WPLMS, they appear in one case - on the reply/topic editing page.
they also appear on BB search page (via widget search)
Unable to replicate the issue at our test site in modern theme .
refer :
http://prntscr.com/af2jfz
Your screenshot is correct, but there shouldn't be ANY breadcrumbs, as they are stripped in Modern theme, except the mentioned above pages. On my screenshot I used the main theme bbpress.php, so it also appears in the header (it's not the bug). The bug is the crumbs under the header.
Yep i was able to replicate the issue at our end with the default theme .
We would try fixing this in the upcoming update of wplms theme .
thanks for reporting .