We upgraded from CorelDraw 2018 to 2019 a couple of days ago. For some reason, the canvas is a dull yellow colour by default, when we create a new file. Older files made in 2018 too, have this yellow colour. When exported into PDF, or JPEG (haven't tried any other options, but I'm sure that this will happen there too), the files look perfectly alright. That yellow colour makes it a little difficult to judge what colours we're using, so its a bit of a problem for us as you can imagine. I don't think this is a problem with the monitor because, the menus, dropdowns, etc. all show in white - as you'll see in the screenshots below.
Wrote to Corel's customer care a couple of days ago, and haven't received a response as yet. Would appreciate some help on changing the canvas colour to white.