• Forge Version: forge-14.23.5.2847
• Calculator Version: calculator-1.12.2-5.0.12-15.jar
• SonarCore Version: sonarcore-1.12.2-5.0.19-20.jar
• Multiplayer or Singleplayer: singleplayer
• Crash Report Link:
  crash-2020-02-07_16.44.23-client.txt
  crash-2020-02-07_16.48.42-client.txt
• Affected Features: in-game guide (info calculator)
• Description: opening the transmitter tab on the info calculator crashes the game, but only when done from the sidebar of an other "related" tab.

sidenote: Volcano Block modpack, but AFAIK it shouldn't be related to the issue.
Also it was marked as solved in 2016 (#151), but it seems like it is not.