There is a bug on Windows version 9.2.1735 (3d90379)
The issue with collapsing/hiding quote blocks also affects lists sometimes. (For ref: Auto expand quoted text - eM Client )
E.g., if you sent an e-mail where you type out a list like:
(So indented with letters and spaces to make thinks clear)
eMClient will hide them behind 3 dots you then have to expand.
Not such a huge problem for you the sender (although it is annoying, and makes you wonder if you wrote your e-mail right, and is not great if you need to come back to it at a later date and forget you made a list), but if you are a recipient who uses eMClient, it will also be hidden.