This are 2 different issues.
According our Support Agreements, I will handle the first issue here in this Ticket.
https://toolset.com/toolset-support-policy/#support-request-guidelines
Please can you open a new issue with the missing Styling section in the Views Cell?
Regarding the first issue, we are aware of this situation.
It seems in some edge cases the OLD layouts (what you created before WP 4.5 was release) is not displayed anymore.
Is this the case on your install?
If so, can you provide me a Site's Snapshot of this install?
This is because we are not able to reproduce this problem even with the correct process of updating OLD installs
I would need a sites snapshot if possible.
We usually recommend the free Plugin "Duplicator" for this porpoise.
If you already know how Duplicator works
(http://wordpress.org/plugins/duplicator/),
please skip the following steps and just send me the installer file and the zipped package you downloaded.
★ Duplicator Instructions
hidden link
Send me both files (you probably want to use DropBox, Google Drive, or similar services, as the snapshot file will be quite big)
❌ IMPORTANT ❌
Remember to create or keep an admin account for me before creating the snapshot, or I won't be able to login. You may delete the new admin account once the snapshot has been built.
I will enable your next answer as private so you can provide me the information securely.
I will be very happy to receive this Duplication, as there are few tickets with this issue but until now, nobody was willing or able to provide us a Test Package.
It would help us greatly, to fix this ASAP.
Thank you for your kind understanding.