[Bug] d.erase red doesn't work with d.mon wx0

[HuidaeCho]

Describe the bug
Erasing the monitor with a non-white color doesn't work.

To Reproduce
Steps to reproduce the behavior:

d.mon wx0
d.rast elevation
d.erase red

See the display is white.

Expected behavior
The display becomes red.

System description (please complete the following information):

• Operating System: Linux
• GRASS GIS version: main branch

Additional context
In the monitor directory, ppm is actually red, but the display shows white.

[pesekon2]

Same here, it is a general issue with the module. d.erase doesn't work even using it the standard module way in the g.gui. The only way to make it work is adding the command (that does not work in the GUI console) as a command layer.