This has always been a problem in CorelDRAW:
When I am typing artistic text and then change the input language, if CorelDRAW decides that the font does not support the newly selected language, it automatically switches the current font to something else.
In 100% of my cases, the original font does support the characters I need, so there is no reason for the font to be changed.
This automated behavior causes unnecessary steps: I have to stop editing the text, revert the font back to the original typeface, and then continue typing.
Please allow the program to show .notdef glyphs when a character is unsupported. The user can then decide how to proceed. In my experience, there is never a situation where an automatic typeface change is needed.