File saved only in vault - not possible to move from vault

Hi.
As far as I remember the date issue was that the date of encryption was set and was overwriting the original date. (Keep modification date and other dates of original file · Issue #220 · cryptomator/cryptomator · GitHub)
This was fixed with 1.4 (and had a regression which was fixed with 1.4.11)
[Bug] Timestamp problem in Cryptomator v1.4.7 (Windows)
So version 1.4.6 that you are using should not be affected. However, the actual Version is 1.4.13 and I recommend an update.

Your issue #2 is hard for me to reproduce. Can you please post a step by step guide what you do, how the system acts, and what you expect how it should act.
Maybe these known issue is also a cause:

If yes, you can try and switch the volume type to dockany to solve this.