Current HDR file formats do not view well in incompatible software or devices

I agree. HDR images view correctly on my Apple Studio monitor in LR Design mode with SDR view option checked. Flip to full screen (press F key) everything still looks good. Press G to go to grid mode, colors are off and hightlights are blown out. Press F and now full screen is also blown with weird colors. Back to design mode with SDR checked and all is good again. Images don't export correctly in ANY format. Haven't tried printing yet. This makes Lightroom HDR worse than useless as you might export image files thinking they were good only to be disappointed later. 

This is a valid request as when I save a HDR image from Lightroom Classic to jpeg format, when viewed on my iMac (M1 version), and my iPhone 15, the image appears degraded and poorer than when saving the same image as a non HDR version.  

How can I save a HDR image to be viewed to the HDR generated quality to view and share at the same quality.  After all once the additional range is extracted it should be then able to be saved as that !

Lightroom is not saving the image appropriately, to enable viewing on a range of current devices.  I dare not share HDR generated images as other viewers (anf myself) will be disappointed in what they see compared to the oroginal HDR creation !