From user perspective it might be a bug, but I am a developer so I know that it can be treated as new feature
Generally the msi's afters auto-update are not removed which leaks user's disk space a lot.
Disk space is cheap but still for example I have SSD 120GB and it is really not a lot these days and each installer takes > 100MB.
1. Install older version of Remote Desktop Manager
2. Auto-update to newer version
The msi is located C:\Users\robert.pajak\AppData\Local\Temp\Update after installation
After installation the msi should be removed from the disk
I have run Disk Cleanup and the files are still there. It does not remove these files.
I will add this to our todo list.