Product and version FileMaker Server 15v3
OS and version - Hosted on Windows Server 2012 R2
Browser and version Microsoft Edge 40.15063.0.0
Edge has a spell checker turned on by default. It marks incorrect words and suggests replacement words. When a replacement word is selected it is inserted at the beginning of the input box.
How to replicate
Do data entry in WebDirect and miss-spell a word. Right click on the word, choose a suggestion.
Workaround (if any)
Note - Chrome simply underlines the miss-spelled word but doesn't suggest a solution. Spell checking in Chome is also off by default (last time I checked) so it is not an issue there. The users for this particular solution really want spell checking which is why they are using Edge.