Values are not properly set, when listview is not at beginning

[qarmin]

From issue https://github.com/slint-ui/slint/issues/2598#issuecomment-1773863372 - looks that this is different problem

Tested on latest 1.3.0 branch with applied 78d273e59956a6df2642ebb501a3d9465d7e035d(this fixed problem with invalid internal state btw)

When using slintpad link or slint-rust-template.zip

selecting and deselecting elements when listview is not scrolled works fine, but start to break when items are scrolled

https://github.com/slint-ui/slint/assets/41945903/ff0c6fcb-6232-4a0d-bb45-22548cd139ca

At video:

• first time without scrolling

• selecting 4,5 element

• in debug logs is visible that item was not selected and after clikcing r.selected_row = !r.selected_row properly converted r.selected_row = false into r.selected_row = true

• second time with scrolling

• selecting 4,5 element

• in debug logs is visible that item was not selected and after clikcing r.selected_row = !r.selected_row shows that r.selected_row = falsenot changed value to true, but should

[ogoffart]

Thanks for the bug report. I can reproduce the problem: The ListView track the model data at the wrong index when scrolled.