RB3011 port disconnect and connect and not working normally!

Hello,
today i face new issue and it was all connected devices to port 1-5 could not ping gateway and their port disconnect and connect and i change all cables but no success then finally move all devices to port 6-10 and they work with no issue ,
can you help me how can i trouble shoot issue for that ports?
and i am nervious because i have 5 CCR Mikrotik i do not want this issue happen for them, and when i read on your forums it seems this issue happen for most rb3011 but it seems ccr has different architecture and we are safe from this issue for them , right?
thanks