SonarQube: 7.3
SonarLint: 4.7
Visual Studio : 15.8.8
We use SonarLint extension without connecting the SonarQube.
Every time we start visual studio there is always a message that one or more rule sets out of date.
After closing this message, we can not use enter or delete key in the source file.
In the Team Explorer window we close message that i share below. And all key work fine.
The original question was about a situation where the user did not want to be in connected mode. If you are using connected mode then you should check those solution-level files in.