Parsing expressions with Abs expression gives different latex emitted from mathlive input

[OnlyBjarne]

Description

When parsing expressions containing "Abs" the returned latex string is not working in mathlive.
mathlive returns latex \left|a\right| when writing manually

Steps to Reproduce

1. Paste ["Abs", "x"] into MathJSON-field in compute-engine demo
2. Add any input to the field

Actual Behavior

Following the steps above gives the following error ["Error", "'unexpected-delimiter'", ["LatexString", "'\\vert'"]] when giving the latex string to mathlive field

Expected Behavior

Expected behaviour is no latex errors and having possibillity to edit field further

Environment

MathLive version 0.98.4
ComputeEngine version 0.22.0

[arnog]

Fixed.