Dragging scroll bar presents weird behavior

[HaroldLever]

Godot version

4.2.1 stable

Smooth scroll container version

d1a7891

Description

ScrollBarDragging1.mp4

• h/v_scrollbar_dragging remains true when drags scroll bar until mouse enters content node's area.
• any_scroll_bar_dragged() does not work, I guess it is because scroll bar 's 'focus_mode' is None by default.

ScrollBarDragging2.mp4

Then I tried to set scroll bars' 'focus_mode' to All, but something weird occurred.

• Content node has offset when scroll bar is focused.
• h/v_scrollbar_dragging and any_scroll_bar_dragged() remain true when drags scroll bar until lose focus.
• Dragging doed not work when scroll bar is focused.

Steps to reproduce

Check properties on rich text label. Add these few lines in update_text() might help you check any_scroll_bar_dragged().

func update_text(ssc:SmoothScrollContainer):
	while true:
		await get_tree().process_frame
		new_text = ""
		for propertyInfo in property_list:
			var propertyName : String = propertyInfo.name
			var propertyValue = ssc.call("get", propertyName)
			var propertyType = propertyInfo.usage
			new_text += "[color=green]%s:[/color] %s\n" % [propertyName, propertyValue] if propertyType == 4096 else "[color=yellow]%s:[/color] %s\n" % [propertyName, propertyValue]
			# new lines
			if propertyName == "v_scrollbar_dragging":
				new_text += "[color=lightblue]%s:[/color] %s\n" % ["any_scroll_bar_dragged()", ssc.any_scroll_bar_dragged()]

[SpyrexDE]

It's probably better to use the scroll bar's gui_input event to determine if they are being dragged instead of relying on their focus_mode. The scroll behavior when scrollbars are focused is in fact weird but I can't think of a use case where a user would like to make the scroll bars focusable.