In F# when a single pipeline operator (1 argument) is used, the ligatures are applied:

However when a multi-pipeline operator is applied (2 arguments), the ligature does not work:


Works again when more arguments are added to the pipeline operator (3 arguments):

The above was tested in VS Code.
I've used another font with ligatures (Fira Code) in VS Code. It does not have the above issues, works as expected.