I have 2 s+rj10 with CRS326 and CSS326, one of the transceivers flaps 10 times everyday and then hang, I have to disable and enable it in interface list of RouterOS to bring it back, another one is relatively stable, it flaps every several weeks and hangs once a month recently.
They are both very sensitive to temperature. I installed a fan inside the switch to cool the sfp+ case directly. the bad one behaves a little better with the fan, and it gets much better when room temperature drops below 20c. but RouterOS update doesn't help in my case.
I won't touch mikrotik's switch any more, besides this issue, the 10G transceiver to 1G port is 20MB/s slow. and vlan was initially broken when I brought these switches. their products are far from enterprise quality , some don't even match other consumer grade products