delay in closing an inactive line

[televoicepl]

Hello everyone. First of all, I would like to thank you and express my admiration for your work. Please forgive me if I make any mistakes, but I use a translator. I have a question about this function:

https://github.com/InnovateAsterisk/Browser-Phone/blob/35e3433c420a04103b76ee930273c553c5564ef5/Phone/phone.js#L3549C1-L3552C14

 //Close up the UI
 window.setTimeout(function () {
     RemoveLine(lineObj);
 }, 1000);

in function teardownSession(lineObj)

Can you tell me what the idea is to delay this execution?
I am experiencing an issue with it. I managed to connect Browser Phone to the FreeSWITCH, and it works great.
But when the FreeSWITCH closes the ringing connection and immediately opens the next incoming call (mod_callcenter when another agent answers the call), Browser Phone closes the popup after a second and enters the conversation window with previous Buddy. (Closing line is execute after incoming call)
The popup for the current incoming call is not displayed even though the Browser Phone is ringing in the background.
Turning off this delay fixes this problem for me, but I don't know if it will break something else.

Thank you for your suggestion.