Reply To: Weird behaviour for Place command

(Blush) Aw shucks …

But you are correct to be careful: you may think you have a cursor in your text because you see the I-beam cursor, but you might have a text frame selected, and in that case you will replace the entire frame.

It's safest to stop and think what you want to do every time you are about to place something: either insert an image into the text (check: do you see your text cursor?), or put it anywhere on the pasteboard for later positioning (check: do you have nothing selected? (And to de-select everything, you can always hit the Deselect All key combo: Cmd/Ctrl + Shift + A.))