Framing error if I disable transmitter after shift register is empty?

[Demon]

The last byte DOES get transmitted.

    TXSTA.5 = 1                     ' TXEN: Transmit Enable bit
    hserout ["1"]
    pause 1
    hserout ["2"]
    pause 1
    hserout ["3"]
    pause 1
    hserout ["4"]
    pause 1
    hserout ["5"]                             
    pause 1
    while TXSTA.1 = 0               ' Check TRMT: Transmit Shift Register Status bit
    wend
    TXSTA.5 = 0                     ' <----- Causes Framing error after last byte !

Something happens when the transmitter is disabled:




I compare with my code and wiring on my old test circuit, and I can't see anything different...?