[Bug] Sidebar dont open complete if using sub-sub menue

[DasFragezeichen]

I love your sidebar menue. Thanks for it.
I modify it a little bit and use it with a sub-sub menue (See picture) Only the css-file was modifyed, not the js-file.)
The problem is, that if I load the webside and click an entry it works fine. If I click than an other entry it's also fine. But if I click an entry I clicked before it does not open complete.
Could you please fix this?

Open entry first time

Open after clicking an other entry