Improved Spell Capacity does not grant spell slots

Hello,

When defining a PC with epic spell slots (10+) using Improved Spell Capacity, spells slots are not granted.

When using bahamut epic level handbook source, the spell slots are granted, it's why I report this as a DATA issue.

I've attached a sample wizard built with 3.5 RSRD (epic wizard.pcg)

and a sample druid built with bahamut sources (epic druid.pcg)

I've made a bit of debugging myself, and seen the SPELLCAST bonus does not appears in the PlayerCharacter.bonusManager, despite beeing defined in the lst file.
The druid get this bonus in its PlayerCharacter.bonusManager : SPELLCAST.CLASS.DRUID;LEVEL.10=1.0