DHCP problem on Vritual AP interface

Hi All,
I’m new in the MikroTik, bought my first device recently (RB2011UAS-2HnD-IN) for a home use and with every new command entered in the CLI I’m more and more happy with my decision of buying it:)
Neverthless, I encountered an issue I cannot solve.
Basically I use MT as an Access Point connected via trunk (802.1Q) to a cisco router which does the routing and DHCP.
Everything works like a charm for basic WLAN1, but there’s an issue with VAP - WLAN2, which is by the way configured exactly the same except security profile (different pass and WPA PSK in addition to WPA2).
So, here’s the issue:
When connecting to VAP, after the authentication, the DHCP configuration starts. Client sends a DHCP DISCOVER packet, which is picked up by a CISCO router correctly and CISCO sends a reply which is not received by the client.
What’s interesting, when a client, let’s say a laptop is also connected via cable to the same vlan, it receives the reply and configures the IP on a wireless and wired card:)
Also, when I configure the static IP on a client, everything else works fine - there’s full connectivity.

Anyone have an idea, why VAP is not passing the DHCP reply from CISCO to the client?

Best regards.

Post your config with /export compact

Sorry for bothering, issue solved itself during the night. I don’t know how, but it started to work without any problems.
I have no idea why, as config hasn’t changed.