Hello Friends,
I am using richtext for the multiplefield of the touchui. I want to setup hyperlink for a text. After setup and save, I reload the page the hyperlink missing the href. I searched the problem, but I don't know why and how to fix it. Please see the attach images.

After save and preview.

Missing href:

Please help me, Why it happen? and How to fix it?
Thanks you so much,
BienHV