Hello 
Update for Right Sidebar Blocks theme component. 
-
Added custom scrollbar (borrowed from sidebar)
-
Added a new setting:
right sidebar blocks expanded
(Enabling this setting will expand the right sidebar blocks height and makes the components separate. The last component is sticky.)
https://github.com/VaperinaDEV/fkb-pro-theme/commit/fc78f90959c8170eb8c8505348f71e019c516675
Added custom scrollbar to a mixin.
https://github.com/VaperinaDEV/fkb-pro-theme/commit/b4abee66e5883e8ae2181f8f7fe816cdde92a8f4