My trouble is that scalable parentheses of matrices, used in linear algebra, worked perfectly in LibreOffice Math until the advent of LibreOfffice 7 and later versions (up to version 24).
Now they do not work properly any more.
If you typed
left [ matrix {
a_11 # a_12 # a_13 # a_14 ##
a_21 # a_22 # a_23 # a_24 ##
a_31 # a_32 # a_33 # a_34 ##
a_41 # a_42 # a_43 # a_44
} right ]
in the equation editor of Libre Office Writer 6, you got a matrix surrounded by square parentheses as expected.
Now in LibreOffice 24 scaled parentheses disappear as soon as you exit the equation editor; only the 16 elements of the matrix are displayed - although scaled parentheses are correctly inserted when you export the document in PDF format.
Clearly it is a bug of LibreOffice Math and/or LibreOffice Writer that needs to be fixed.
Thank you very much for reading