Hi,

My router is RB 3011. I have few devices connected via ethernet cable, and some of them via Wifi (Mikrotik CAP).
ethernet port are in bridge1, CAP interface datapath is associated with bridge1.

I noticed that when i use Wifi i can ping every device which is connected via cable. I also can ping every device in the network when i connect to router via cable.
The devices connected via WIFI doesn't see each other, cant ping each other etc.

Any ideas what may cause mentioned problem ?

https://wiki.mikrotik.com/wiki/Manual:C ... n_Profiles

datapath.client-to-client-forwarding (yes | no; Default: no)
controls if client-to-client forwarding between wireless clients connected to interface should be allowed, in local forwarding mode this function is performed by CAP, otherwise it is performed by CAPsMAN

Have you enabled client-to-client forwarding? It's off by default.