i had this problem for a long time now, but it seems maybe VMWare is not aware of it so they are not fixing it with the updated versions.
I am running a Windows 10 VM, and have all applications installed that I use daily, and the problem is only with Viber. Its GUI is transparent and I cannot use it unless i minimize all other windows like Firefox for example. And my background hast to be black. See picture in attachment.
I had the same problem. Solved by disabling "Accelerate 3D graphics" in section "Display" in VM settings.
Also this helps to minimize CPU utilization on host by process "VMware Workstation VMX"