Noted to be fixed.
Might be a peculiarity of the Autopilot. You have to be below the glideslope and in ALT mode. Then press the APPR button and you should get both ALT and GS indications. When the glideslope needle is about 1/3 above the center, you must press the ALT button. The ALT indication will go away and only the GS will be visible (regarding the vertical navigation). Then the aircraft will follow the GS to the ground.