Invisible flash messages (no "fade in" animation) ? #1440
Description
On a fresh installed demo ( symfony new --demo my_demo ), the flash messages seem invisible.
The HTML generated in the default/_flash_messages.html.twig contains "fade in", but is seems that it "fade show" is the rule preventing "fade" to hide the block.
The "fade in" classes were added in this commit, but i suspect the "in animations" have been removed since (in this commit ?)
Did i miss something ? If not and this is a bug, i'll submit a fix