+1 for Fo's bug report.
Changing the layout using the dropdown at the top right seems to cause Corona to crash on next render.
I can't get a screengrab so:
The error message is "An internal error occured: wxWidgets Assertion failure.
File:..\..\src\msw\textmeasure.cpp(64)
Fuction: wxTextMeasure::BeginMeasuring
Condition:m_hdc
Message: Must not be used with non native wxDCs
I'm running Win 10 C4D R18.028 RC3