Header Links showing beyond search box and minicart beyond navigation !! Magento 2.3.5-p1

When a customer is signed in the header links (My account, My Wish List, SIgn Out) are displayed beyond the search box . See the image attached .

I’ve noticed that there is an element.style {z-index:100} if I change that to 1001 the dropdown is displaying correctly but I can’t figure it out where this element.style is coming from . Can somebody point me out where to look for ? Need to mention that this is not happening just in my theme is happening in Luma theme as well . I’m using magento 2.3.5-p1 .

Also I have same problem for minicart. The pop up message when you delete a product from minicart is displayed beyond header. The z-index is 902 and if I change it to a bigger value then is ok.

Is there any javascript or where is this element.style{z-index: 1000 / 902 } coming from .