Welcome to the WPF feedback portal. We’re happy you’re here! If you have feedback on how to improve the WPF, we’d love to hear it!>
Thanks for joining our community and helping improve Syncfusion products!
When a treegrid is loading collapsed, and the parent of any collapsed branch is checked (ore the root), I'm expecting the children of that parent also to be checked; this is not the case though until the branch is expanded at least once, then the children are checked.