I recently noticed that several plugins in the Moodle plugins database do not show their 3.6 version in the plugin main page:
Flashcards set (https://moodle.org/plugins/mod_flashcard)
The new trema theme (https://moodle.org/plugins/theme_trema)
Google analytics (https://moodle.org/plugins/pluginversions.php?plugin=local_ganalytics)
Restriction by cohort (https://moodle.org/plugins/availability_cohort)
Knowledge sharing (https://moodle.org/plugins/block_knowledge_sharing)
User bulk enrolment (https://moodle.org/plugins/pluginversions.php?plugin=local_bulkenrol)
Course completed ewnrolment (https://moodle.org/plugins/pluginversions.php?plugin=enrol_coursecompleted)
Microsoft onedrive document converter (https://moodle.org/plugins/pluginversions.php?plugin=fileconverter_onedrive)
The foundation theme (https://moodle.org/plugins/theme_foundation)
The last two plugins do not show ANY Moodle branch supported, even though they do have a 3.6 compatible version.
With some of these plugins, when I try to install it from the Moodle plugins database in my 3.6.2 server, it downloads the 3.5 version instead.
This is a very serious issue, as the 'Install plugins from the Moodle Plugins directory' feature can actually install the plugin 3.5 version in a 3.6 server, and in the case of the flashcards plugin, it will freeze the server.