Though I don't know any effects which this bug can cause (I've noticed it reading the configs), it's obvious that it's a copy paste problem. Patch will be attached.
Created attachment 8861 [details] [review]
It really looks like copy/paste issue.
Sergey, be careful! You've change the line to "modifier=Meta_R", but right way is "modifier=Meta". See how it is done for Meta_L some lines above.