This is not a solution but a suggestion, try restarting the machine first, else uninstall 2018.3 and re-install it. If nothing works your best bet would be to open a support case.
Here are a few suggestions.
1. Is your laptop super old and doesn't meet the minimum specs? All Technical Specifications | Tableau Software
2. Did you install with admin rights on your laptop?
3. Can you look in the Tableau Desktop logs for any related errors? Usual location is: C:\Users\your_user_name\Documents\My Tableau Repository\Logs
Thanks Jeff and Shivaram -
I've tried restarting, uninstalling and reinstalling, etc.. I'll give that one more shot though. Going through the logs, I only see info level logging, and nothing particularly interesting, minus a spot for 'crash-reporting' with a correlation id (guid). Probably a red herring since it's at the info level.
I'm surprised other folks haven't been running into this (at least from my searching). The laptop is last year's model and definitely meets all the specs. I still have 10.5 installed which works just fine. Bizarre. I'll let you guys know via this thread if I find the solution. Thanks again!
One more idea to try is to navigate via command line to where tableau.exe runs at. Then open it up with debug mode turned on and then see if anything useful appears in the logs.
This command has worked with earlier versions of Tableau, I haven't tried it yet with 2018.3