[Yolle]

Hi!
Embedding Youtube video worked fine on my site until 1-2 days ago.
I was using Smart Youtube Pro plugin and lately alongside that also the WP Youtube Lyte, since some subscribers reported problem with youtube video when viewing my site via iPad.
SO, everything worked ok, on my blog posts/pages/comments as well as within bbpress forums. In forums, videos were embedded either with http:// or https:// link, all worked ok. On the rest of the site (post/pages/comments) they were embedded either via httpv:// (Smart Youtube Pro and WP Youtube Lyte requirement, well, it became optional now) or normally (http(s)://)
Now, “all of a sudden” some of the videos are not embedded in forum topics. And in no particular pattern that is: some https videos are embedded, some not, some http:// are embedded, some not.
I recently upgraded to WP 4.0. but a few days ago I downgraded to 3.9.2. due to problems with bbpress and s2member (see topic)
So… Does anyone have a clue what is going on? I should probably make a developer page and then test plugins one by one to see which one is causing the problem? An easier way perhaps?