[Rider for Unreal] Code completion issue in 2020.3.1

I'm trying to use code completion to override a virtual function in a class. Since the Rider for Unreal 2020.3 update this no longer works. Last verified version was the one before 2020.3.0.

Reproduction steps:

1. Type the name of a virtual function to override in a class header.
2. Observe suggestion box opens.
3. Select a suggestion with either Enter or Shift.

Observed (2020.3.1)

1. Suggestion gets partially inserted for one frame (example: `NativeConstruct() override`)
2. The next frame, text reverts to situation before inserting suggestion.
3. See this animated image:

Expected behaviour

1. Fully qualified function declaration to appear (example: `virtual void NativeConstruct() override`)
2. This was working before 2020.3