We have released a fix inside RouterOS 7.14beta10 regarding the issue and have got positive feedback.
See http://forum.mikrotik.com/t/v7-14beta-testing-is-released/172080/1 *) poe-out - improved 802.3at classification and measurement accuracy;
The fix will be ported to SwOS also as this was not board/OS specific issue. Can’t say exactly when the new version will be released, but anyone wanting to try it can write to support@mikrotik.com and get the latest rc version.
Note, some PD’s still required LLDP negotiation together with our changes, so your experience may vary.
At current time, can’t give hopes about LLDP support in SwOS.