[mtlmtlmtlmtl]

I tried literally this and I just get videos of random length with various matches in the comments and descriptions. It completely ignores the double quotes here. I've even tried setting my user agent to Chrome on Windows without any change.

[nabakin]

It sounds like the problem I was having on FF. Switch to Chrome and see if this problem persists

[quantumsequoia]

Tried Chrome on multiple OS, still not working