What is the fundamental difference between webKit and Vblink?

Question

safari

Hello. There is a corporate web application. You can select dates in it - we get the number of babos for these dates. When connected via an internal network or a VPN client (cisco), everything works fine. But, if you connect through a cisco proxy, then the selected dates are still reset to the current ones, as if the browser does not remember the choice.
The question is what. The fact that in Safari everything continues to work, but in Chrome (Vivaldi, Opera) - no. What are the differences between the engines and their settings?

Answer 1

https://en.wikipedia.org/wiki/Comparison_of_browse...