Unfortunately I couldn't reproduce your specific problem @novacadian. It compiled the system without problems.
What I did was that I downloaded Kubuntu's iso image version 18.04.3 LTS 64 bits from https://kubuntu.org/getkubuntu/ I set up the virtual machine in vitual box and then I installed the OS using that iso and updated everything to the latest packages.
Finally, I followed the guide until it finished and I ran the compiled wallet as you can see in the picture.
I don't know what could be happening to you or why is that happening to you. I remember, however, that something similar happened to me when I tried to compile it in my old machine and it had a lot of dependency problems. I wish I could help you more nova, I'm so sorry 🤔 😢
I tried building this wallet on a windows version of Ubuntu recently just to see if it worked and no dice. There's proprietary Windows OS running Devcoin - Wallets using QT just like there are Linux wallets that began compiling and running GUI Bitcoin versions when the first bitcoin.exe ran for Windows 7 or 8 I believe.
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Well, I have to check it out, because I've never tried it the way you do it, I mean, I've been compiling it in Linux Mint, Kubuntu and Ubuntu versions running it on fresh installations and in virtual box without problems. Let me see if I can replicate the problem.
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