Looks like you manually selected Vnav to accelerate, and ended up with a Thrust increase (note FMA change from THR to THR REF).
Many 744 operators advise either selecting FLCH and an appropriate speed, (usually Vref30+40 or Vref30+100) at acceleration altitude (typically 1000ft AAL) to achieve acceleration, or selecting V/S and a suitable speed. If using V/S it would be 'normal' to leave the pitch mode in TOGA until the FMC has commanded acceleration (at pre programed altitude) and a suitable pitch attitude is already achieved. This is simply for pax comfort.
A word of warning mind, leaving the Beast in TOGA for pitch until altitude capture will result in an acceleration to Vmo/Mmo/ Flap limit speed as you will still be in THR (or THR REF if you pushed TOGA twice).