Changing Toolkit Causes Extension Blocks to Disappear

Bugs and Other Issues
1

I installed the Ullis Roboter Seite MQTT extension, and the blocks for my added component were visible. When I changed my block toolkit to add modulo, the blocks disappeared from the menu.

EDIT:
Changing toolkit back to "Default" resolves this issue temporarily.

2

Just leave the setting on Default, you have access to all the blocks that way.