On 27 Jun 2019, at 7:01, feek wrote:

since the latest build of TM today (2.0 rc24), the Emmet plugin even do not
show in the menu bar. I switch to rc10 (Emmet works) in order to do some css
work.

This is likely because rc-24 has the hardened runtime enabled (and is notarized).

I imagine that plug-ins must now also have the hardened runtime enabled to be able to be loaded by TextMate.