DOM nodes keeps increasing about jzz HOT 3 OPEN

hi. update:
I found that commenting out this line solves the problem.

and by analysing, i found:

when i click on refresh button which does JZZ().refresh() method, the <div id="jazz-midi-msg">...</div> updates. also, DOM node count increases by 3.

if i remove the event listener...

then on each run of JZZ().refresh() method, one line is added: (i clicked 5 times)

so, i think JZZ().refresh() method is keeping history of all times when refresh() method is called. maybe to compare the current value with previous one to see if there is any difference? (just my thought), but it uses memory and DOM.
is this intentional? or is this a bug?

from jzz.

This DIV is used to communicate with the Jazz-MIDI browser extension.
The event listener reads it and then cleans it up.
I don't understand what you are trying to accomplish by removing the event listener.

from jzz.

I see... I removed the event listener just to try to understand what it does.

Mainly my problem is with DOM nodes count. I mean, even if i didn't remove the event listener, the count was increasing gradually.

Mainly if i use JZZ().refresh() method.
(+3 DOM nodes per call)
Or if i subscribe to onChange() method...
(+3 or +6 DOM nodes per second)

I was trying to understand if this is normal or not... that constant increase of DOM nodes count

from jzz.