Parsing of math expressions

[Rudi Gaelzer]

My system:
LyX 2.4.1
Qt Version: 6.7.2 on platform wayland
Fedora Linux 40 (KDE Plasma)

Since the last upgrade it seems that a very useful property has been lost.
Before, whenever Mathematica worked out some mathematical result, I would 
TeXForm it, thereby generating the LaTeX source, copy it and paste it into LyX 
in any mathematical environment.  LyX would always parse correctly the LaTeX 
expression.
Now, I always get the commands, without parsing.  Is there some configuration 
that changed since the last update?
-- 
Rudi Gaelzer
Instituto de Física
Departamento de Física
Universidade Federal do Rio Grande do Sul
Av. Bento Gonçalves, 9500
Caixa Postal 15051
91501-970 Porto Alegre - RS
Fone: (51) 3308-6474
Usuário de Linux registrado # 153741