Steps to reproduce the issue

Clean install of j5 alpha
Go to plugin manager and display filters

Expected result

all filters display

Actual result

the first filter (status) does not display

Additional comments

I finally tracked it down. The field type in the xml is "plugin_status" but the actual field is "pluginstatus"

In joomla 4 this is resolved by classmap which creates an alias between the two

In Joomla 5 (on a clean install) it would appear that this classmap is NOT used by default UNLESS the new system-backwardcompatibility plugin is enabled. it is not enabled by default

It is easy for me to change the field name BUT that is fixing the symptom not the cause.

the classmap says deprecated 6.0 so I would expect it to work until 6.0
I do not expect that I have to enable an additional plugin for the classmap to work

a clean install of joomla 5 should not require this plugin to be enabled