Commenting line doesn't work in SQL code chunk in R Notebook

When using SQL code chunk in R Notebook, Comment/Uncomment Lines from RStudio doesn't work.

My RStudio version is Version 1.2.1335 (it's possible newer version solved this problem already)

I cannot report issue in github since github is blocked in company right now...

Actually SQL comment doesn't get recognized too...

I put "--" in front of a line of SQL code, but the whole line still was sent as query.

Would you mind filing this as a bug report at https://github.com/rstudio/rstudio/issues?

Raised here
Thanks!