There are tens if not hundreds of different topics, spanning at least 8 years, about this issue both here on Mikrotik official support forum, as well as many other forums. Correct me if I'm wrong, but where we stand right now:
- As for now, there hasn't been a clear answer towards WHAT is the reason behind this issue (many have suggested radio interference in CAT6 cables, auto-negotiation issue, software issue, etc.).
- Back in 2011 Mikrotik guys were actively and even agressively denying this issue exists at all. After a year or so there were already tens of people complaining about this problem, and Mikrotik finally admitted that they are aware, but can't replicate this themselves.
- In 2016 forum post someone from Mikrotik team (Normis, I guess..?) said that they are working on the fix of this issue.
- Haven't seen this issue being menitoned from them since (while there are reports of port flapping as recent as last year)
As I'm about to spend few hundreds of Euros (and especially given the fact that this time I'll spend my own, not client's money) on Mikrotik products - can someone from Mikrotik team confirm that this pain-in-the-ass problem has finally been resolved once and for all?
P.S. If you "still haven't found a way to replicate this problem" - I invite your tehnician to visit my current apartment (15 minute drive from your headquarters), bring some oscilloscope and debugging hardware, and feel free to explore this happening in real time here - as mentioned above, I'm currently experiencing this problem for a 5+ years now.