Can't commit C# completions in Razor just by typing in VS Code

[Peter-Juhasz]

Version: 1.94.2 (user setup)
Commit: 384ff7382de624fb94dbaf6da11977bba1ecd427
Date: 2024-10-09T16:08:44.566Z
Electron: 30.5.1
ElectronBuildId: 10262041
Chromium: 124.0.6367.243
Node.js: 20.16.0
V8: 12.4.254.20-electron.0
OS: Windows_NT x64 10.0.22631

Typing space (or any other contextual commit character) does not commit the (hard) selected completion:

20241017-0803-26.9727693.mp4

I have not found any settings related to this.

(It does work in a plain C# file in VS Code.)