LaTeX parsing: Discrepency with processing "GCD" vs "LCM"

[tejashah88]

Making a new issue here since it seems to be more relevant (from arnog/mathlive#2858).

Description

I was testing GCD and LCM on the Mathfield demo website and noticed the following behaviour:

Keyboard Input	LaTeX	MathJSON
lcm(24,37)	\operatorname{lcm}\left(24,37\right)	["LCM", 24, 37]
\operatorname{lcm}\left(24,37\right)	\operatorname{lcm}\left(24,37\right)	["LCM", 24, 37]
gcd(24,37)	\gcd\left(24,37\right)	["Tuple", "GCD", ["Tuple", 24, 37]]
\operatorname{gcd}(24,37)	\operatorname{gcd}(24,37)	["GCD", 24, 37]

It seems that the LaTeX \gcd function is causing extraneous tuples to be generated.

Steps to Reproduce

For each row, type according to Keyboard Input. Copy-pasting won't work unless you do it with the LaTeX column. The LaTeX and MathJSON should appear accordingly.

Environment

The keyboard input is tested against the mathlive.io demo website: https://mathlive.io/mathfield/demo/ using compute engine v0.30.2.