Suspicious difference in book series/CSM completion passive effect

[dcsobral]

Version

2.1 b7

Platform

Windows

This is not an in-game bug report, and both logs and screenshot links are bogus (copied from a previous bug report).

I was looking at what skills lead to an increased chance in book series (which is not as well documented in-game as Crafting Skill Magazines) when I noticed that the mechanism used to "turn off" the increased chance when the series is completed is different than the one used by CSM. Book series use a "perc_add" operation and CSM use a "base_set" operation, even though both use "perc_add" to increase the chance.

Here's an example:

                        <!-- Increase the chance to find rifle crafting skill magazines with each perk rank up to crafting skill 100 -->     
                        <passive_effect name="LootProb" operation="perc_add" level="1,5" value="2,10" tags="riflesCSM">                       
                                <requirement name="ProgressionLevel" progression_name="craftingRifles" operation="LT" value="100"/>           
                        </passive_effect>                                                                                                     
                                                                                                                                              
                        <!-- Once rifle crafting skill reaches 100, set the probability bonus of finding rifle crafting skill magazines to 0 -
                        <passive_effect name="LootProb" operation="base_set" level="1,5" value="1,1" tags="riflesCSM">                       
                                <requirement name="ProgressionLevel" progression_name="craftingRifles" operation="Equals" value="100"/>       
                        </passive_effect>                                                                                                     
                                                                                                                                              
                        <!-- Increase the chance to find Sniper books until each book is read -->                                             
                        <passive_effect name="LootProb" operation="perc_add" level="1,5" value="2,10" tags="sniperProb">                     
                                <requirement name="ProgressionLevel" progression_name="perkSniperComplete" operation="LT" value="1"/>         
                        </passive_effect>                                                                                                     
                                                                                                                                              
                        <!-- When all Sniper books have been read, set the probability bonus of finding them to 0 -->                         
                        <passive_effect name="LootProb" operation="perc_add" level="1,5" value="1,1" tags="sniperProb">                       
                                <requirement name="ProgressionLevel" progression_name="perkSniperComplete" operation="Equals" value="1"/>     
                        </passive_effect>