I have a SplitterControl on a form. The splitter control contains a DataGridView in Panel 1 (Dock=fill). The splitter control contains a text box and label in panel 2. Text box is anchor to the 4 sides. The splitter control is anchor (top,bottom, left).

Next to the splitter control on this form is a datagridview that is anchor (top,bottom,right).

this form is displayed into multiple tab panes of a tabcontrol on the Main form.

when the Main form is resized (window resized), the first page gets the value correct (most of the time), the remaining pages extend the text box below the tab pane page.

The DataGridView works correctly, but the splittercontrol appears to scroll or extend below the tab form.

I have verified the textbox by setting the dock=fill and running the page. Part of the text box is displayed below the tab boundary.