If one uses 1/4" hardwood-veneer ply for a panel in a flat-panel kitchen
cabinet door is there a problem caused by gluing in the panel? I know this
is a no-no for solid wood panels. But, since I plan to use stub tenons for
my cab doors, the thought is that gluing in the panels would strengthen the
doors -- which could be helpful for large doors and if any rack is attached
to the cab doors to hold "things", such as pot lids, woks, whatever. This
would also keep the panels from sliding around, having to use spaceballs,
etc.

If this is a no-no even for ply, it would be helpful to know why -- i.e.,
what the dynamic is. Also, what if I could locate mdf-core or particle
board core ply for the panels?

All this being said, at my sister's this past T-day I noticed that the ply
panels in some of their cab doors has warped -- in their large custom
kitchen. Not generally noticeable, but as I studied the cabs I noticed
that the panels were "stuck" because they had warped in the slots. They
live in New England, so they do not have big humidity problem in summer and
they use a humidifier (at normal levels, as best I can tell, i.e., not fog
on windows) in winter.

Comments, please, about glue-in. TIA. -- Igor