My friend had Minecraft Java for the longest time, and after people had to switch there Mojang account to a Microsoft account, it said he could only play Java but in the Demo Version. He tried buying the whole game again like 3 to 4 times. Eventually it worked, but I heard of some other players having the same issue with their launcher. He let me login to his account on my game laptop, and for some odd reason it said I could play the whole game of Minecraft Java and there was no demo. I'm also pretty sure it's not related to the device or pc itself since I've heard others with the same or a similar issue and experience. I don't have any photos or screenshots since this happened a while ago, but I do know it's still happening the a few players who played Minecraft Java. I do want to clarify that he is able to play both Java and Bedrock Editions now of the Minecraft launcher. Thanks again Mojang and Microsoft.