Can two external roller shutters share one switch if one motor buzzes at limit?

Hello
I have a problem as per the subject. the „Fitters” have punched one hole and fed the wires from two roller shutters into it (large window in the living room, so there had to be two roller shutters). The electrician, meanwhile, connected these roller shutters to one button and everything seemingly works, but…. When I lower the roller shutters all the way down, the limit switches them off accordingly. However, when I raise the roller blinds, one of them lowers by about 5-10 cm when I reach the end, then retracts and lowers again several times until it finally retracts properly, but I can hear a buzzing sound. Sometimes the roller shutter doesn't go „crazy” but you can only hear a buzzing sound as if the motor was still running and the limit switch wasn't cutting off. I read somewhere that two roller shutters should not be connected to one button/switch, because as far as I remember „they induce each other”. Could this be the reason for this behaviour of the roller shutters, or is there something wrong with the motor after all?
Greetings

Hello. In your case, the limit switch is set wrongly on this one roller shutter. It is a question of setting. In this case, you can control all of them at the same time and each of them separately.

Hello
I don't know if I understood correctly, but in order for this connection „to have arms and legs” I have to buy a controller, because this connection of two roller shutters directly to one switch is not a good solution?
Regards

macieja wrote:

...... You can connect two and more roller shutters under one switch..

How can you be so sure? It all depends on the type of roller shutter, not all can be connected on one switch.
https://www.elektroda.pl/rtvforum/topic1028649.html

In your case, they're both the same length - there's a possibility that it's just a matter of setting up the end cap - as a colleague writes, but the safest thing is to ask the manufacturer about the possibility of connecting them together on one switch.

http://www.montotras.pl/uploads/images/rolety/schemat_podlaczenia_rolet.pdf

Thanks very much for all the replies. Problem solved I bought a double switch "Kontakt Simon 54 Premium" and everything works fine. If it helps anyone it is as colleagues have written (at least it was in my case) you should not connect two roller shutters directly under one switch.
Greetings