Autodesk made what....? $4.3B in 2022, and we still have to put with this?

They could have replaced the control they are using in this dialog, a decade ago

Although far less elegant than Jeff's video, I wrote about this very same "workaround", over 9 years ago, here: https://cadpanacea.com/wp/?p=959

What I believe you will find, is that you do want ClearText enabled for every other action you do in Windows, except this silly C3D dialog. Now where is that roll eyes emoji....?