A family of Microsoft word processing software products for creating web, email, and print documents.
Have you tried simply restarting the Mac? If that doesn't clear it up...
Due to the way Microsoft & Apple are doing things "up to date" doesn't mean very much :-) Please provide the specific Version of Office as indicated in Word> About Microsoft Word as well as indicating the exact version of macOS as indicated in **> About This Mac**. Causes & cures can vary based on those specifications.
Additionally, do you have any add-ins [such as Grammarly]?
Some alternative selection techniques to consider:
- Click at the start, scroll if necessary, then hold Shift while you click at the end of the passage
- To select a word double-click the word
- To select an entire sentence beginning to end hold the Command key while clicking anywhere in the sentence.
- To select an entire paragraph triple-click anywhere within it
All of the above can be extended on the same basis by using the Shift-Click method. E.g., Command-click a sentence then Shift-click in another to include it as well as all sentences in between.
The left margin is a selection area as well:
- Click to the left of a line to select the line
- Double-click to select the adjacent paragraph
- Triple-click or Command-click to Select All
- Drag down (or up) in the margin to select line-by-line
Unfortunately, dragging is the first & only method most users pick up on their own, so that's what they're most comfortable with. Introducing other methods may seem awkward at first but soon become second nature.