Behavior reproducible on latest 1.2.x and master.

Same issue with 'fixed in version' too

+1

@dregad, we utilize the sub-projects feature extensively where I work, and it would be amazing to be able to update product version information for sub-project issues using the "parent" project.

@claude.bing I unfortunately do not have the time to work on this. You are welcome to submit a pull request with a proposed fix, though.

@dregad Thanks for the heads up. I'll hopefully get a chance to take a look at this soon, as it would be a great feature to have.

@claude.bing Great, let me know if you heed help. Looking forward to your contribution

as workaround you can show the list of all projects:
Parent releases do not show up in pull down. To work around that we are listing all project releases. This is accomplished by changing a flag $t_multiple_projects from false to true on the bug_actiongroup_page.php file in the mantis root folder.

run through the issues to see if they are all from one project
$t_project_id = ALL_PROJECTS;
/

Changed to display all projects at all times.

Necessary to be able to link issues from sub-projects to parent-project releases.

/

//  $t_multiple_projects = false;

$t_multiple_projects = true;