Stack sizes increased after update to version 3

Hello, after the update of my project from CrossWorks 2 to version 3. I have noticed something abnormal about the stack sizes,

My stack sizes on version 2

stack accel: used 388/1016 (38.2%)

stack modem: used 1592/3576 (44.5%)

stack comm: used 1152/2552 (45.1%)

stack gps: used 324/692 (46.8%)

stack gps_rx: used 2172/2792 (77.8%)

stack rendezvous: used 192/792 (24.2%)

stack ibutton: used 136/392 (34.7%)

stack monitor: used 204/392 (52.0%)

stack event: used 780/1016 (76.8%)

stack serial: used 1984/3064 (64.8%)

Stack sizes on version 3

stack accel: used 1012/1016 (99.6%)

stack modem: used 3572/3576 (99.9%)

stack comm: used 2548/2552 (99.8%)

stack gps: used 688/692 (99.4%)

stack gps_rx: used 2788/2792 (99.9%)

stack rendezvous: used 788/792 (99.5%)

stack ibutton: used 388/392 (99.0%)

stack monitor: used 388/392 (99.0%)

stack event: used 1012/1016 (99.6%)

stack serial: used 3060/3064 (99.9%)

1) One of the most important changes is the update of the thumbs file. I have included both thumbs file in case you notice any difference. 

2) An other change for moving to version 2 to version 3 was to update some project properties. included on a screenshot.

new file: thumb.crt0.s 

old file: APP_FMG_thumb_crt0.s

The code for both versions is the same, if its none of these cases what else could affect this ?