Similar, yes. But not with the IE Plugin.
Recently i've installed QV Client SR3 and i have the same problem: charts/button are behind their background textboxes.
But this problem appears only when i use it with "Open in Server". Stand-alone QVW works fine.
QVS is SR2.
I try now to install QVS SR3 to see if the problem persists.
I am having the same issue but I am only using the SR3 client.
I am just testing this on a basic document with just a couple of text objects and some list boxes.
Everything appears to work/look ok until I hide the sheet, when I bring the sheet back again all my text objects are on top of each other. (no layering)
I then click on each object and layering is restored..... until I hide the sheet again!