The previews are not generated as before (solved).

The previews are not generated as before (solved).

Hello!.
I like your application for a long time. The only thing that made me give up using it in the past is that there was no application for windows. Happy to see that it now exists, when testing Zoho again I see that it does not currently generate previews as it did before automatically, despite doing a lot of testing (see images comparing previous notes).
I am a very visual person and it is much more practical for me to recognize what interests me with a simple image.
This can be solved ?.

Thank you!

Today:
Today no preview
Before:

Past with preview