I wouldn't call that "fixed" Have you felt for dampness after a rain if so there is water getting in under roof if outside corner wall. If wall is in center of house & close to bathroom could be problem there. Have you checked out the attic to see if floor or rafters are wet? Should have gotten it in writing that problem was fixed(& what the problem was) I think it's plaster wall & don't know anything about repairing them but "fixing the wall won't help if you don't get to root of where the "problem" is. If the area is totally dry & no sign of water marks then it sounds more like a settling problem. Are you on stable ground? Was house moved in there? Earthquakes? Any other damage inside or out like that? Critters in attic or walls? Good Luck!

Thank you sunnyca for info.Greatly appreciated. Will post once its fixed with picture. Thank you again

that picture is so hard to see what is going on.