Typing and Clipping Mask Issue (Windows)

Yes, the font problem (as mentioned by Doug) has been fixed as well as your undo clipping mask problem in 29.2.1

https://illustrator.uservoice.com/forums/601447-illustrator-desktop-bugs/suggestions/49131404-undo-release-clipping-mask-does-nothing

1. I chose a font (Myriad Pro) to type in paragraph and changed to another font (Arial), after that i typed and it changed to previous font (Myriad Pro).

2. When i released a clipping mask and pressed Undo to back clipping mask mode, but it appeared as non clipping mask although it was a clipping mask.

What can I fix?

By @Giang Gia

1. Which version of Illustrator are you using? This sounds like a bug that should have been fixed in 29.2:

Font changes from the current one to the previously used while typing – Adobe Illustrator

2. Can you please show an example with the exact steps you took?