When using an android phone (in this case my HTC One running android 4.3) whenever I need to migrate a question I can select the 'Migration' option but can't clear all the placeholder text. It just adds itself back in when i've cleared it out.
Selecting the field makes the 'type to search' text selectable. Should I clear it out and then start typing in there the 'type to search' text adds back into the field next to where i've typed. So in effect I end up with 'stack overflowtype to search' showing in the field that I then have to move the cursor to the end of the text and delete the supplementary text.
Now this is annoying.
It would be annoying if it were on a desktop where I have a mouse to help me, but with my fingers jabbing at a text cursor in a small field several times it drives me crazy.
So my suggestion is - Please remove the placeholder. There isn't really a Label on that field anyway, so for accessibility purposes there really should be one. So perhaps set 'Type to Search for a Stack Exchange Site' as the field label.
Or just scrap the placeholder anyway. People with the rep to do a migration should know how these sites work anyway, so it's arguable that it's redundant text anyway. But I suggest having it as a proper form label instead.
Note, I've seen this post (below) but it doesn't seem to be the same issue that I have.