Browser Back Button functionality broken after login

[vpopa22]

Please describe the issue in as many details as possible.

cc @t1gor

Versions:

• npm -v: 5.8.0
• node -v: 8.11.4
• vxpay-js: 2.6.2

• you can find the last one by running npm list vxpay-js --depth=0

Problem

After login is performed i would like to navigate via the browser back button to the previous page and failed to do so.

Details....

It appears that there is an event listener on beforeUnload that does not get unset after login is performed. This completely breaks the expected browser behavior

Possible solutions

Find the listeners and remove them after login is done.

Vlad@vxpages team

Thx !

[t1gor]

After a short investigation, I can only say that:

• this seems to be happening due to VXPay frame participating in the navigation (e.g. if you open login screen and decide to change for registration or lost password)
• this behavior is not consistent - some times it allows back navigation by the back btn, some times the iframe only sends postMessage {"type":"modalbox-hook","data":{"hook":"login"}

@maddockman could you please let us know if this is a desired behavior?

[maddockman]

There's a functionality in the VXPay frame, that prevents going back in some case. It should prevent to navigate back to the login or signup view, if the user is already logged in. So, it's a desired behaviour but it may be buggy, as mentioned in the cases.