In SSMS 18.3, they added the option to turn off the completion time.
Tools > Options > Query Execution > SQL Server > Advanced.
Uncheck the Show Completion Time checkbox.
Start a new query window and execute something...
No completion time after query finishes. Yay!
I know this is an old question but this seems to be the sacrifice Intellisense is demanding. It is similar to the post linked to in @LowleyDBA's (arguably better) answer. Unlike the linked answer, this provides a safe and strong guarantee that your table will not be messed with that Intellisense likes.
IF OBJECT_ID('tempdb..##Example') IS NULL
I don't know of an easy implementation in standard SSMS, you could use sp_help / ALT F1 when hovering over the table to check what columns belong to the table.
or selecting the table & pressing ALT+F1
These query shortcuts can be found in options - environment - keyboard - query shortcuts
While not native to SSMS, you could download and install the free version of SSMSBoost.
While viewing your query, highlight the column in question, right-click and choose (Locate object in Object Explorer)
The SSMS Object Explorer window will put the focus on the exact table and column.