Andreas Bolsch added the comment:
I'm afraid I don't know Tcl nor python good enough to be able to strip this
down to a reasonably simple test case.
However, I wonder what's going on there:
When the Tcl variable holding the radiobutton's value contains "x", "z", ...,
v
New submission from Andreas Bolsch:
Applies to 2.7.10 and 2.7.12:
Installed LinuxCNC from source at https://github.com/LinuxCNC/linuxcnc :
./configure --with-realtime=uspace --enable-simulator
--enable-non-distributable=yes --prefix=/usr --libdir=/usr/lib64
make
make install
Configured device