On multiple layouts of our solution, a single user is seeing any web viewer content displaying in the upper left corner of the window (covering the other content) instead of its correct position. In one case, a web viewer that is supposed to be inside a popover is displaying there even after the popover is closed. Other users are not seeing this behavior. The first time we saw this, restarting the computer fixed the issue, but the most recent time the behavior persisted.
User is running FileMaker 16.0.3 (32-bit) on Windows 10.