Found in "Detritus"
When entering an acronym into the acronyms.local.conf that has parentheses in it, e.g. the following nonsense line
G(4) Test
this leads to the acronym matching in pages to turn from full word to substring matching.
That means that for example every word containing the substring spec gets the "specification" tool tip: respectively, especially, special, ...
For "Elenor of Tsort" I found this partially fixed, here the substring matching happens only at the beginning of the string (i.e. only the word special from the previous list gets the tool tip)
Besides the acronym with parentheses does not get a tool tip.
Probably easiest would be to mention in the documentation that parentheses should not be used in the acronyms.
by definition an acronym is a word, it would never contain punctuation
Parentheses might not work as punctuation in an acronym, see for example the acronym for "International Information Systems Security Certification Consortium" as stated in https://en.wikipedia.org/wiki/Acronym
@swiehr that construct does not conform to the definition of a word (https://en.wikipedia.org/wiki/Word)
Let's not get hung up on definitions. The current behaviour seems wrong to be and should probably be fixed.