TreeTable: Custom node toggle icon does not apply

[moduly-solutions-slechner]

Describe the bug

When using the TreeTable component and trying to customize the toggle icon, by following docs I'd have to use the column slot (from the column with "expander" flag I suppose, not clear from reading the docs). However, this does not work and the default icon is still displayed. See reproducer.

Pull Request Link

No response

Reason for not contributing a PR

• Lack of time
• Unsure how to implement the fix/feature
• Difficulty understanding the codebase
• Other

Other Reason

Maybe I am just misunderstanding the docs, but if so, maybe you can make it clearer.

Reproducer

https://stackblitz.com/edit/primevue-4-vite-issue-template-zvekqtu5?file=src%2FApp.vue

Vue version

3.4.31

PrimeVue version

4.2.5

Node version

18.20.3

Browser(s)

Chrome

Expected behavior

I expect the default toggle icon to get replaced by the one specified in the #nodetoggleicon template (e.g. apple icon in reproducer).

[moduly-solutions-slechner]

I just noted, that you can pass an icon in the data itself. The TreeNode has options expandedIcon and collapsedIcon. This is quite confusing because at least for me it is not clear whether to use these options or the slots from the Column. There's some ambiguity in the docs.

Besides this, using these options also don't work for me. It just makes the default expansion/collapsing icon disappear without injecting the specified one.