1) Create for some widget several constraints with different multipliers
2) Open Layout tab in Properties dialog for this widget
3) Sequentially open all created constraints for editing (double click on constraint). You can see that multiplier for first opened constraint is always shown/
Version of Visual Studio extension is 188.8.131.52, Visual Studio version is 15.3.5 (last available).
This should already be fixed in newer builds. If it is not in the 15.4 builds which have been in the preview channel for the last few months then it will be in the 15.5 builds which will be in the preview channel shortly!