aman204 Thank you Aman! Looks much better but I still wonder why the white space happened?
My initial issue is however still there, which is that modules (for example "search" - id 109) does not show op on position sidebar-2. It does show, however floating in the right upper corner.
I would expect it to be under the last module which in this case is related items (which is actually coming from K2 settings). See screenshots:
1) how it looks like without the search box;
2) with search box floating right upper corner, white space on the left size and I have drawn the search box where i expected it. I have disabled it again but feel free to play around.