Style change not updated when class attribute is changed

[Aurèle Duda]

Hello,

on Linux Mint, Inkscape 0.92+devel (f637680, 2017-10-22)

In xmleditor, when I change the content of a class attribute of an object (with or without style attribute), the change is not rendered unless you save and revert the document.

Open "test_class_style_update.svg"
Select the blue rectangle
in Xml Editor, change the class bluerectangle to redrectangle
Click on Set => no change
Save the file and revert File
Change is OK.