Sorry for not being clear. I create a new document within SlickEdit (by click File->New or clicking the New button). I then usually select
SQL Server for the document mode. However, I am also able to recreate the hanging by opening an existing document. If you are going to try to recreate the issue, then let's start with a newly created document.
I create a new document within SE and select SQL Server for the document mode. I then enter the following...
select column1
, column2
, column3
, column4
, column5
, column6
, column7
, column8
, column9
, column10
, column11
, column12
, column13
, column14
, column15
, column16
, column17
, column18
, column19
, column20
from table
I then right-click on the C in column20 and, while holding down the right mouse button, I move up and select the C's from the above columns. I then type MAX(. After a few seconds, SE hangs.
While trying to recreate this issue, I noticed that if I only selected a couple rows, SE doesn't seem to hang. If I get to about 10 rows, it hangs for a few seconds, but then it starts responding. However, once I hit 12 or more rows, it hangs for a long time (and sometimes doesn't even come back).
I tried to recreate the issue by creating a new document and selecting Batch for the document mode. SE didn't hang for me even when selecting 50 rows. Under Options, I even turned off Enable auto-completion, Enable auto-Close, and Enable Auto-Surround for SQL Server and I am still having the issue. These are not turned off for Batch.