Why no ping through bridge?

Please remove topic

Are you sure the firewall in R1 isn’t blocking anything? do you see traffic reaching the bridge/ports in R2?

Im sure 100%.
You may create lab, and just enter my command from R1 and R2. And anything more. All default config.
I am see, that R1 no response to broadcast traffic from PC1. So, PC1 can`t resolve this IP address to MAC address

I presume you have setup your default gatway on the PC or 192.168.1.1?

this is no matter, because PC1 and R1 in same subnet

Moderator, pls del this topic, because re-create this in general.
tnx

Default config firewall rules blocks access to ether1, use any other port or reconfigure the firewall on R1/R2