PrestaShop v1.7 Admin panel logs out on any action

[Eugene L]

I have installed PrestaShop without any issues on Ubuntu server running apach2 with all prerequisites. 

However it was initially running on IP address.

I later reinstalled PrestaShop after finishing DNS change for new domain name because side was reloading from domain name to IP address.

After reinstalling - I noticed that Admin panel keeps logging out on any action or when any link is clicked.

I tried all proposed solutions for PrestoShop v1.6 - it didn't help or didn't apply to v1.7.

My DNS name is managed by CloudFlare.

[Eugene L]

Actually I solved this issue - CloudFront by default proxies all requests for DDoS protection.
Switching it off to DNS record only - fixed this issue.
However PrestaShop admin login module probably is not handling it correctly.
I will look into fixing it when I have time since I still want to use CloudFront protection.