In Edit mode, the object looks normal. but in Object mode, the wireframe is not visible and only the outline is visible.
I downgraded the graphics card because I thought it might be a problem, but there is still a problem. By the way, rendering works normally.
I tried reinstalling the blender and graphics driver, but the problem remains the same.
Now version is 'RadeonSoftwareAdrenalin2020 20.11.2'
Upgraded version is '20.12.1'