I just installed RStudio v1.2.637-1 Preview release on Ubuntu 18.04 (Bionic Beaver, which means I am still running R 3.44) When I try and resize the window, RStudio crashes silently. It adds the following event in the R.session.log:
21 May 2018 16:29:11 [rsession-michael] ERROR Parent terminated; LOGGED FROM: void {anonymous}::detectParentTermination() /var/lib/jenkins/workspace/IDE/open-source-pipeline/master/src/cpp/session/SessionMain.cpp:1266
Thought I would pass it on.