The getScrollableParents method throws a exception in shadow dom

[1Map]

The line below (At the bottom) will work as long as the parent is not a #document-fragment with nodeType = 11. Do not know what it will do with nodeType = 10?

Please see: Link

Your code does getScrollableParents and goes up the hierarchy. The moment the parent is a #document-fragment with nodeType = 11 it throws an error and it fails in overflowCheck on

let styleDeclaration = window['getComputedStyle'](node, null);

Because getComputedStyle does not work on a document-fragment. Although you test for parent.nodeType !== 9 (DOCUMENT_NODE), you do not also test for parent.nodeType !== 11 (DOCUMENT_FRAGMENT_NODE), and like I said, I do not have a test case on parent.nodeType === 10 (DOCUMENT_TYPE_NODE), so not sure what 10 will do.

primevue/components/lib/utils/DomHandler.js

Line 337 in e0194b3

if (parent.nodeType !== 9 && overflowCheck(parent)) {

I presume the line above should be changed to:
if (parent.nodeType < 9 && overflowCheck(parent)) {

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We're unable to replicate your issue, if you are able to create a reproducer or add details please edit this issue. This issue will be closed if no activities in 20 days.

[1Map]

You will not reproduce this issue on a normal website where your components live in the body. The moment it is in a shadow-root, then it gives this bug. Read through my ticket above as I had stated clearly where your problem lies.

In:

primevue/components/lib/utils/DomHandler.js

Line 337 in e0194b3

if (parent.nodeType !== 9 && overflowCheck(parent)) {