Word Document shrinks to half size

There may be several reasons why Word is shrinking to half its size in full screen mode. Here are some possible solutions you can try:

Check for software updates: Ensure that you have the latest version of Microsoft Word and your operating system. Software updates can fix bugs and performance issues that could be causing the problem.

Disable the "Snap" feature: Windows Snap is a feature that automatically resizes windows to half the screen when you drag them to the edge. If this feature is enabled, it may be causing Microsoft Word to shrink to half size. To disable it, go to Settings > System > Multitasking, and turn off the "Snap" feature.

Check your display settings: Your display resolution or scaling settings may also cause Word to shrink to half size. You can check and adjust your display settings by right-clicking on the desktop > Display settings.

Maybe you unzoomed maybe pressed some shortcut to unzoom in the app you use to work with the document