Otherwise it showed up in "Other" category in XFCE (and most likely also in MATE), where there is no "Science" category by default, but there is one "Education" category.
Before
It only showed up in "Other" category.
After
And it does not anymore show up in the "Other" category.
Otherwise it showed up in "Other" category in XFCE (and most likely also in MATE), where there is no "Science" category by default, but there is one "Education" category. Before
It only showed up in "Other" category.
After
And it does not anymore show up in the "Other" category.