Nothing weird about it. That was there in Beta sessions while they were testing.
It says under construction. It could be you have an old file interfering with your game, or they may have done an update and it hasn't gone through properly.
It's just something they had while they were sorting out icons etc.
Make a note of where you located it, and if it happens in more than one location. If so, report it to ANet Support.
At one point the dye remover was red in color just like the red dye, they changed it to look like this ( image attached ) because ppl were scaming it for red dye. I think if you log out and relog in it will fix it and you will see the proper picture.