Page redirections trigger a deprecation warning since MantisBT 2.26.0 #411
Description
This actually causes MantisBT to display a blank page instead of redirecting as expected (see upstream issue #33480). With the fix in PR mantisbt/mantisbt#1955, the deprecation warning is displayed:
Deprecated functionality: "print_successful_redirect()", use "print_header_redirect()" instead. (in .../plugins/source-integration/Source/pages/repo_create.php line 17