It seems flipshot (Not sure if Retreat Shot is also affected by it) isn't providing the bonus hit unless this does not show in debug.
Code:
System: Debug: attack_pow: spec_arrow_dmg_bonus increases Power to 29
System: Debug: Total Power for Bow / Bow was 32.
System: Debug: Before Use Skill called. Prinny, CattoZerg, Attack, 1
System: Debug: Attack type: /obj/skill/fe_attack/bow. attack_nums:
System: Debug: attack_pow: spec_arrow_dmg_bonus increases Power to 29
System: Debug: Total Power for Bow / Bow was 32.
CattoZerg attacks Prinny with Bow!
Critical Hit! Prinny takes 49 Pierce physical damage.
System: Debug: Rolling wound: /wound/open_wound/stab with a chance of 3.45%
System:
* Initial Damage: 32 Pierce Physical, flags: projectile, sk: null, wep: Bow / /obj/items/equip/weapon/ranged/bows/bow
* play_atk_anim was 1.
* 0 Evade VS 207 Hit.
*2 Roll(s) Remaining. This one was a hit.
*1 Roll(s) Remaining. This one was a hit.
* Critical check: 77 Critical VS 0 Critical Evade. (32)
* Critical hit multi was 155. (49.6)
* armor was allowed. armor_reduc was 0. (49.6)
* spec_flat_reduc was 0. (49.6)
* amp_multi was 1. (49.6)
* reduc_multi was 100. (49.6); MAG DEF, 0 PHYS DEF, 100 REDUC
* elem_reduc was 0. (49.6)
* Damage caps applied. (49.6)
* Damage shields applied. (49.6)
* Final damage was: 49.
CattoZerg recovered 2 FP.
System: * basic_attack(atk:CattoZerg,def:Prinny,W:Bow,dmg_mod:0,hit_mod:0,crit_mod:0,crit_dmg_mod:0,spec_flags:,auto_hit:0,dmg_scale:0,counter:0,magic_atk:0,ignore_onhit:0,dtype_rep:,retal_ok:1,auto_crit:0,fatal:1,ignore_closes:0,dmg_scale_post:,attack_num:1)
* atk_multi was 100. atk_bonus was 0. dmg_scale was 0.
* crit_multi was 155. crit_dmg_flat was 0. attack_num was 1.
System: Debug: 0&&2
System: Secondary targetting required. Select Target 1 > Select Target 2 > Skill Used. Press accept/cancel to move forward/backward in this process.
System: Secondary aiming now: on.
System: Debug: Checking cost negation effects.
System: Debug: attack_pow: spec_arrow_dmg_bonus increases Power to 29
System: Debug: Total Power for Bow / Bow was 32.
CattoZerg attacks Prinny with Bow!
Critical Hit! Prinny takes 49 Pierce physical damage.
System: Debug: Rolling wound: /wound/open_wound/stab with a chance of 3.45%
System:
* Initial Damage: 32 Pierce Physical, flags: projectile, sk: null, wep: Bow / /obj/items/equip/weapon/ranged/bows/bow
* play_atk_anim was 1.
* 0 Evade VS 207 Hit.
*2 Roll(s) Remaining. This one was a hit.
*1 Roll(s) Remaining. This one was a hit.
* Critical check: 77 Critical VS 0 Critical Evade. (32)
* Critical hit multi was 155. (49.6)
* armor was allowed. armor_reduc was 0. (49.6)
* spec_flat_reduc was 0. (49.6)
* amp_multi was 1. (49.6)
* reduc_multi was 100. (49.6); MAG DEF, 0 PHYS DEF, 100 REDUC
* elem_reduc was 0. (49.6)
* Damage caps applied. (49.6)
* Damage shields applied. (49.6)
* Final damage was: 49.
CattoZerg recovered 2 FP.
System: * basic_attack(atk:CattoZerg,def:Prinny,W:Bow,dmg_mod:0,hit_mod:15,crit_mod:0,crit_dmg_mod:0,spec_flags:,auto_hit:0,dmg_scale:0,counter:0,magic_atk:0,ignore_onhit:0,dtype_rep:,retal_ok:1,auto_crit:0,fatal:1,ignore_closes:0,dmg_scale_post:,attack_num:1)
* atk_multi was 100. atk_bonus was 0. dmg_scale was 0.
* crit_multi was 155. crit_dmg_flat was 0. attack_num was 1.