Ok some of you are having issues and I am not so I prepared some captures of Windows color management settings, CorelDRAW default application settings and CorelDRAW document settings.
Unfortunately using some settings in the past may have created a situation where the files view in 2019 incorrectly no matter what you do so. My suggestion is to set Windows color management settings and then reboot the machine, the set CorelDRAW and Photo-PAINT color management settings.
When using edit bitmap in CorelDRAW to edit an image before choosing edit bitmap make sure you have saved your working CorelDRAW file and HAVE EMBEDDED THE ICC PROFILE! Other wise PP has no idea what profile to use and will default to the default PP color management settings.
Create a document using the new document dialog in CD it should follow the application default setting if not make sure the color management settings match the application settings ad something, name, save and EMBEDD THE ICC PROFILE.
Check your previews and how the file opens. Check an old file that previewed incorrectly and let me know please.
I pretty sure I owe you a big, IG apology. You said right at the outset that the root of my yellow screen problem was a corrupt monitor. In a last gasp experiment last night, I installed 2019, from the same download, on an unconnected laptop. No problems - the program displays and performs exactly as it should.
I looked at the monitor's properties and curiously it suggests that it 'migrated' as recently as May last year. It's actually been in place for far longer than that - for at least 4 years, probably far longer. I've no idea what 'migrated' means in this context but something seems to have happened on the 20th may last year, between the installations of Cdr 2018 and 2019.
Is it probably time for a new monitor?