RubyMine2018.2 Warning: PATH set to RVM ruby but GEM_HOME and/or GEM_PATH not set

Each time I run a server, a spec, a custom run configuration, or when IDE runs bundle installs, indexes rake tasks, etc. I get this error. All things seem to work fine though it's very annoying as it clogs the output of commands and RubyMine events log.

Here's an example:

bash -c "/Users/[user]/.rvm/bin/rvm ruby-2.3.1 do /Users/[user]/.rvm/rubies/ruby-2.3.1/bin/ruby /Users/[user]/Projects/idebugs/1.rb"

Warning: PATH set to RVM ruby but GEM_HOME and/or GEM_PATH not set, see:
 https://github.com/rvm/rvm/issues/3212

Warning! PATH is not properly set up, $GEM_HOME is not set.
 Usually this is caused by shell initialization files. Search for PATH=... entries.
 You can also re-add RVM to your profile by running: rvm get stable --auto-dotfiles
 To fix it temporarily in this shell session run: rvm use ruby-2.3.1
 To ignore this error add rvm_silence_path_mismatch_check_flag=1 to your ~/.rvmrc file.

Although both variables are present in the environment (the script from above outputs the ENV):

{ ...,
  "GEM_HOME"=>"/Users/[user]/.rvm/gems/ruby-2.3.1", 
  ..., 
  "GEM_PATH"=>"/Users/[user]/.rvm/gems/ruby-2.3.1:/Users/[user]/.rvm/gems/ruby-2.3.1@global", 
  ... 
}

The error did not occur prior to 2018.2 version.

RVM is properly configured and no error happens when ruby is used manually from the terminal.

I use zsh. I tried to configure bash for RVM as well. I switched to bash, confirmed that RVM works. When I manually run the line:

bash -c "/Users/[user]/.rvm/bin/rvm ruby-2.3.1 do /Users/[user]/.rvm/rubies/ruby-2.3.1/bin/ruby /Users/[user]/Projects/idebugs/1.rb"

from the terminal (from within both bash and zsh) I don't see the error. However RubyMine still has it (tried Restart, Clean Caches, Reboot).

Additional info:

RubyMine 2018.2.1
Build #RM-182.3911.41, built on August 7, 2018
JRE: 1.8.0_152-release-1248-b8 x86_64
JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
macOS 10.13.6