config falls unless qtwebchannel is installed.
Same here.
Fixed, thanks for reporting: commit 07ba37d27c35a88152a5f413289892c47b8325c6 Author: Mark Wright <gienah@gentoo.org> Date: Tue Jul 3 12:09:07 2018 +1000 sci-mathematics/rstudio: Bump to 1.1.453 Thanks to John Dough for reporting 652116. Thanks to Harris Landgarten for reporting 626056. Closes https://bugs.gentoo.org/652116 Closes https://bugs.gentoo.org/626056
Fixed in rstudio-1.1.383-r1 and rstudio-1.1.453, thanks for reporting.