Question about stacked canvas disappearing

Hi,
I have a block which has some database items and non-database items. Since
there are many items in the block, I use a stacked canvas with horizontal bar
to display the less important items.
In the trigger of new-block-instance, show_view('stacked_canvas')
But I face one problem. When I click on a non-database item and then move
the cursor away from the item, the stacked canvas suddenly disappears.
Any idea ?
Many thanks in advance

Imagine each canvas as a piece of paper stacked on a desk. Each piece of paper possibly has a different size and the top left corner of each piece is possible oriented in a different spot. When you say show_view('stacked_canvas') its like reaching to the bottom of the pile and putting that canvas top. When you click on an item not on the stacked canvas that items canvas is placed on top. Your problem is that your non-database item content canvas is covering up the stacked canvas. I think...
Your issue could be solved by simply rearranging the canvas order by putting the stacked canvas last (I think) in the object navigator.
Raise on Entry could also be causing your issue. Go to the help. Click the search tab. Type "raise on entry". Read "Working with the Raise on Entry Canvas Property". There is a good explanation in there on how stacked canvases get covered up by content canvases and when.

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