Intellisense suddenly disappears

Environment data

dotnet --info output:

.NET Core SDK (reflecting any global.json):
 Version:   2.2.105
 Commit:    7cecb35b92

Runtime Environment:
 OS Name:     ubuntu
 OS Version:  18.04
 OS Platform: Linux
 RID:         ubuntu.18.04-x64
 Base Path:   /usr/share/dotnet/sdk/2.2.105/

Host (useful for support):
  Version: 2.2.4
  Commit:  f95848e524

.NET Core SDKs installed:
  2.2.105 [/usr/share/dotnet/sdk]

.NET Core runtimes installed:
  Microsoft.AspNetCore.All 2.2.4 [/usr/share/dotnet/shared/Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.App 2.2.4 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 2.2.4 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

VS Code version: 1.33.1 (x64) C# Extension version: 1.19

Steps to reproduce

General use (have successfully reproduced on a different WIN10 x64 machine)

Expected behavior

Should not disappear. Seems that it’s hidden because It’s refreshing/reloading or something (my best guess).

Actual behavior

Intellisense disappears suddenly

Screenshots/proof

It actually seems to be getting reset once VSCode adds the auto-newline at the end of the file, if you look closely.

Also, similar problem occurs when I have:

1. My mouse hovering over another entity (class, variable, etc.) anything that would trigger a tooltip.
2. Have intellisense visible (I use CTRL + Space to show it).

My intellisense just disappears, kind of conflicting. I have to be forced to move the mouse where it’s not hovering anything for it to work.

Please fix this, as it is super annoying!

[marcinjakubowski]

For me, it only disappears when invoking a quick-fix to import a reference for the first time in a given file (1.35.1 on .net core 3-preview6). Works fine on subsequent try.

Most of the time it disappears faster than on the capture here.

dotnet --info:

.NET Core SDK (reflecting any global.json):
 Version:   3.0.100-preview6-012264
 Commit:    be3f0c1a03

Runtime Environment:
 OS Name:     ubuntu
 OS Version:  18.10
 OS Platform: Linux
 RID:         ubuntu.18.10-x64
 Base Path:   /home/.../projects/SDK/dotnet/sdk/3.0.100-preview6-012264/

Host (useful for support):
  Version: 3.0.0-preview6-27804-01
  Commit:  fdf81c6faf

.NET Core SDKs installed:
  3.0.100-preview6-012264 [/home/.../projects/SDK/dotnet/sdk]

.NET Core runtimes installed:
  Microsoft.AspNetCore.App 3.0.0-preview6.19307.2 [/home/.../projects/SDK/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 3.0.0-preview6-27804-01 [/home/.../projects/SDK/dotnet/shared/Microsoft.NETCore.App]

Visual Studio Code

Version: 1.35.1
Commit: c7d83e57cd18f18026a8162d042843bda1bcf21f
Date: 2019-06-12T14:27:31.086Z
Electron: 3.1.8
Chrome: 66.0.3359.181
Node.js: 10.2.0
V8: 6.6.346.32
OS: Linux x64 4.18.0-21-generic

[r734]

Same issue here, and it’s been going on for a few weeks on multiple machines running Ubuntu 18.04.

dotnet --info

.NET Core SDK (reflecting any global.json):
 Version:   2.2.203
 Commit:    e5bab63eca

Runtime Environment:
 OS Name:     ubuntu
 OS Version:  18.04
 OS Platform: Linux
 RID:         ubuntu.18.04-x64
 Base Path:   /usr/share/dotnet/sdk/2.2.203/

Host (useful for support):
  Version: 2.2.4
  Commit:  f95848e524

.NET Core SDKs installed:
  2.2.203 [/usr/share/dotnet/sdk]

.NET Core runtimes installed:
  Microsoft.AspNetCore.All 2.2.4 [/usr/share/dotnet/shared/Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.App 2.2.4 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 2.2.4 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

(Note same Host commit as original reporter)

VS Code info:

Version: 1.33.1
Commit: 51b0b28134d51361cf996d2f0a1c698247aeabd8
Date: 2019-04-11T08:20:22.771Z
Electron: 3.1.6
Chrome: 66.0.3359.181
Node.js: 10.2.0
V8: 6.6.346.32
OS: Linux x64 4.15.0-48-generic

The only extensions I have enabled are C#, C# Extensions, and Docker.