Try exporting your thumbnail as a PNG instead of Jpeg, i was getting this with some jpegs on thumbnails about a month ago. Seemed to fix it.
-
-
-
Okay great! Thanks for letting me know! I'll make sure to do that

- 2 more replies
New conversation -
-
-
I've just noticed the same thing with my channel, on the channel home page its all bright which negates the shadow effect I have on them, but in the video manager their fine, so something weird is happening with YT.
-
Yeah. They seem fine on my mobile too

- 3 more replies
New conversation -
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.

|| YouTube Let's Player || ● Everything Happens For A Reason
FFS!