Delayed slide attacks with Sigma & Octantis

[Okami_Amaterasu]

• TYPE: In mission.
• DESCRIPTION: Trying to slide attack with Sigma & Octantis.
• VISUAL: https://gfycat.com/inconsequentialparalleldonkey
• REPRODUCTION: Trying to slide attack with the sigma & octantis, it will force you to attack normally as if you were still standing first.
• EXPECTED RESULT: Should've commenced a slide attack without normal attacks first.
• OBSERVED RESULT: An attack as if you were standing happens instead of a slide.
• REPRODUCTION RATE: Everytime you slide attack with Sigma & Octantis.

Actually it seems that even block+forward attacks also have this delay. Also trying to ground slam sometimes makes you throw the shield first, even if you don't want to.