Note/Mnemonics/Extra

[Chandlerqianxiaodong]

I usually put some hints in the Note/Mnemonics/Extra sections, and I will click each section to reveal the hints. After the last update, I cannot click each section and reveal hints one by one, I can only press 'space' and reveal all the contents together. I'm using the latest Anki version 2.1.66, I tried to downgrade to 2.1.49, but it didn't work, I'm also using AnkiDroid on my phone, doesn't work either, it will not reveal when I click on the Note/Mnemonics/Extra section. Reset note type also doesn't work. Please help or let me know how can I make it work, I have thousands of cards in this form, this will make my daily review miserable, thanks!