Incompatibility with mod_subsection

[PhMemmel]

Describe the bug
Moodle 4.5 introduced mod_subsection which provides the possibility to add subsections to a course. When adding a subsection in format_topcoll a section "Orphaned activities" is being shown including a message that the section is not part of the course structure and the contained activities will not be visible to the students.

I suspect this is a bug?

To Reproduce
Steps to reproduce the behaviour:

1. Use Moodle 4.5
2. Create course with format_topcoll as course format
3. In website administration enable the plugin mod_subcourse
4. Enable edit mode
5. Add a subsection by using the square plus icon in the course content area in a section
6. See the described error message

Screenshots

Versions (please complete the following information):

• Moodle: 4.5
• Format: latest main , 405.0.1

[gjb2048]

Not a bug, as that would be because of a fault in the code, but the need to support new core functionality. Already spent quite a bit of time on this in private development repository to avoid issues with users thinking they can install development code in production. Solution will happen when it happens.

[PhMemmel]

Thanks for the quick reply. I considered it as a "bug", because there is a version declared to be compatible with moodle 4.5 which apparently is not the case. I understand that it's not necessarily easy to implement new functionality. Is there a chance to quick fix this in a way that the usage of subsections is disabled in format_topcoll even if mod_subsection is enabled globally? That would be great to have until it is implemented properly?

[gjb2048]

CT is compatible with M4.5, just not with Subsections which are an option you have to enable.

No quick fix either way. Only current solution is to disable subsections globally.