It is still a working functionality ie. it returns top 1000 rows? Sorry, I ask. I am facing an tech support group that will not fix this broken functionality in SQL Server 2017 SSMS on a virtual computer that I am unable to troubleshoot based on claim that SSMS 17.4 doesn't even include this functionality 'so it must be a bug' and is a bad practice.
If the SSMS install were on my own laptop I would repair .net framework as a start (based on forums I have read for this issue).
I use top 1000 a lot in dev environment.
Sure. It opens a new tab in SSMS, pastes the SELECT TOP (1000) ... query in and executes it, returning the correct number of rows. Appears to be working as expected.
If you haven't even tried to resolve your issue, please don't expect the hard-working volunteers here to waste their time providing links to answers which you could easily have found yourself.