Having an 'auto complete' feature in a coding language is great.
When it work right.
Power Query auto complete does NOT.
Try this: Open a query and click the Custom Column on the Add Column menu. The dialog box opens where you input your M language statement.
Now type into the formula box "Text.Combine" and see the suggestions it brings up and more importantly WHERE IN THE LIST it places the highlight. If you're fast on the keyboard and hit the TAB key without looking at the suggestion it gives, you will get "TextTable.Combine".
What isTextTable.Combine? That's not even a Power Query Function. It an erroneous amalgamation of the FISRT word I typed plus the full command that it chose.
Look at the screen shot below and note the SUGGESTED row it highlights (the one it will take if you simply hit <Tab>) as opposed to the one three rows below it THAT IS AN EXACT MATCH OF WHAT YOU ARE TYPING
Seems Intellisense cannot match on the entire phrase, but only looks at the last word after the period?
After typing "Text." I shouild see a list of all the functions that start with "Text." not ones that start with other words.