The issue can be demosntrated on installation path input but is present on all inputs. █ means current cursor position. Run installer and select language and accept license Write any existed path a) E.g.: '/media/Data/' Move a cursor by a left arrow to begin of a string until cursor move a) Cursor stops at third char b) E.g.: with string '/m█dia/Data/' Move cursor by a right arrow to end of a string until cursor move a) Cursor stops out off the end of a string b) E.g.: with a string '/media/Data/..█' stops two chars behind a string (dot mean space) Again move a cursor by a left arrow to begin of a string until cursor move a) Cursor stops at fifth char b) E.g.: with string '/med█a/Data/' Again move a cursor by a right arrow to end of a string until cursor move a) Cursor stops out off the end of a string b) E.g.: with a string '/media/Data/....█' stops four chars behind a string (dot mean space) Now move a cursor at the beginning using Home key a) Cursor stops at sixth char b) E.g.: with string '/medi█/Data/' And now move a cursor at the end using End key a) Cursor stops out off the end of a string b) E.g.: with a string '/media/Data/.....█' stops five chars behind a string (dot mean space) Again move a cursor at the beginning using Home key a) Cursor stops at sixth char b) E.g.: with string '/media█Data/' And again move a cursor at the end using End key a) Cursor stops out off the end of a string b) E.g.: with a string '/media/Data/......█' stops six chars behind a string (dot mean space) Now return at the beginning using Home key and write a random char a) After written char is repeated selected path b) E.g.: Write 'd' and show '/media/d/media/Data/' c) If you confirm path and redisplay selection, default show '[<home_path>d/media/Data]'