Your system information

• Steam client version: May 15 2019, at 21:17:00
• Distribution: Xubuntu 19.04
• Opted into Steam client beta?: Yes
• Have you checked for system updates?: Yes

Please describe your issue in as much detail as possible:

When you cancel the a game install, it leaves behind an annoying empty folder in steamapps/common

Steps for reproducing this issue:

1. Select game for install
2. Get the download going
3. Cancel the download while the files are being prepared or when the game is being downloaded.