When posting a message, I no longer see the paragraph of latex helper buttons under the edit box.
It appears that one of the admins got rid of them, probably Chris L T521, but it might have been Jameson or janvdl. All three of them have been on in the last two days.
If the buttons had had all their little pictures intact, I think it would have been a very helpful feature. However, with half of the pictures broken, I'm not sorry to see them go, at least temporarily.