TimurA, I of course agree with you that with the same MAC addresses on two interfaces this is a mistake of the developers of this Mikrotik model. Moreover, on the box from the device for wlan1 one poppy is written, and on the device itself another. But it all depends on how the device itself handles this situation. As a result, this may or may not affect the fact that the radio interface stops working.
After today's 5ghz experiments, the following can be summarized:
1. switch chip does not work in bridge mode.
2. Mac adresss duplication on sfp and wlan1
3. curve driver for wlan1, does not work on 4 chains.
4. 160mhz not working. - This is superfluous, here 802.11ac does not work correctly.
Why should the consumer act as a tester? for that kind of money yet.