The connectors between the blocks are not disconnected.

How to manipulate cables in MG3. For example, I mistakenly connected a cable from a modulator to a mixer fader and want to cancel the action. How? There are also four places in the panel for working with VST for assigning parameters of a VST synthesizer. I assigned it by mistake, let’s say. How can I cancel it? It doesn’t work

Sorry for bothering you. I figured it out myself. Long pressing the mouse button removes the cable.

Click on the connection point at the mixer and then hit the BackSpace on the keyboard (this is on Windows, IOS might be different)

It’s a little confusing, I got used to it but this is a point that might be improved in the future.
This works for most connections but not all.
For connection from CC to Modulators you need to “click and hold” the connection at the modulator and move up, sometimes double clicking the connection point works also.