Gif explaining what the issue looks like:
I have had this visual glitch occur since I first got the game back on the 11th of April, and had mentioned it in another support thread as someone else was having the same issue, though that seems abandoned as the OP did not end up replying again.
This visual glitch appears in any screen where there is a "loading bar" type thing, so tech being the most obvious, but also when constructing a building and recruiting a unit will show the same thing.
Failed steps taken to resolve:
Updated graphics driver,
downgraded graphics driver to one that apparently was supposed to work,
full factory reset of my entire system (this was not done specifically because of the bug)
updated/uninstalled/reinstalled Radeon WattMan
Before I had the factory reset of my system, the game would occasionally crash.. sort of.
What would happen is that the game would freeze, and I'd just get a still image of whatever was on screen, but I could hear the game still, including the effects of me clicking behind this frozen image.
On the freeze I would get a notification about Wattman:
An example of this crash can be found at the end of this video (timestamp 17:05):
Specs:
Ryzen r7 2700
Sapphire r9 390
16GB RAM
Game installed on an SSD

I have had this visual glitch occur since I first got the game back on the 11th of April, and had mentioned it in another support thread as someone else was having the same issue, though that seems abandoned as the OP did not end up replying again.
This visual glitch appears in any screen where there is a "loading bar" type thing, so tech being the most obvious, but also when constructing a building and recruiting a unit will show the same thing.
Failed steps taken to resolve:
Updated graphics driver,
downgraded graphics driver to one that apparently was supposed to work,
full factory reset of my entire system (this was not done specifically because of the bug)
updated/uninstalled/reinstalled Radeon WattMan
Before I had the factory reset of my system, the game would occasionally crash.. sort of.
What would happen is that the game would freeze, and I'd just get a still image of whatever was on screen, but I could hear the game still, including the effects of me clicking behind this frozen image.
On the freeze I would get a notification about Wattman:

An example of this crash can be found at the end of this video (timestamp 17:05):
Specs:
Ryzen r7 2700
Sapphire r9 390
16GB RAM
Game installed on an SSD