I'm having what appears to be a similar issue. I'm using a Samsung phone SM. When I go into text within a note and try to make Corrections, it leaves part of the selected word and then inserts the new word before, in the middle of, or at the end of part of the original text. I reloaded the application yesterday. It seems to have resolved an issue that I was having of runaway text where certain phrases that I dictated into the text repeated over and over again until I stopped them and then had to go back and delete all that garbage. But the issue with not removing the full word and entering the new word as well persists. I've tested by selecting the suggested word from the menu and keying the revised word in myself. Same results. But not consistently an error.