That's the same as it is in the unmodded Kotor1 and is part of why the author made the mod in the first place. Sentinel, for example, should have 3+INT mod per level like it does in Kotor2, but in Kotor1 it has 2+FLOOR(Int Mod/2), which is really low for a class that gives up so much combat power in exchange for skills. This mod gives Sentinel 5+FLOOR(Int Mod/2) skill points to try and make up for Int not giving the full effect as it should. It also attempts to rebalance all the other classes skills and skill points, and it also fixes the droid classes's bonus feat progressions, which were backwards.
Ideally someone should fix the INT mod being divided in the skill point calculation, but that's likely hard coded rather than part of the data files, and hence a lot more difficult to change. Someone would need to discover where in the EXE the division happens and hex edit it out, or at least change the 2 divisor to a 1. Dividing by 2 probably also happens a ton of times in the code, making the search extra difficult.