Interesting first tweet last week was
"Again, thanks for everyone’s input and feedback with regards to the P365. There have been isolated incidents of the pistol’s failure to return to battery. Although this can possibly be traced back to a grip issue (whether unlocked wrists or high thumbs), we do not want even rare instances of issues to make our customers lose confidence in the P365. Therefore, we are tweaking the gun to improve RTB conditions. This will help to allow every 365 user to experience what so many have already expressed online in very positive reviews. We are making these adjustments now and will resume shipping very shortly. Thanks again for everyone’s patience."
If it were truly grip issues, why make tweaks?
Then today he issues
"We’re pleased to announce that the P365 has resumed shipping. Thanks to great customer feedback, we were able to make helpful tweaks to the platform. This includes shipping all new P365s with our X-Ray 3™ day/night sights. Owners who are experiencing any issues with their original P365 SIGLITE® sights can contact customer service to have X-Ray 3s shipped to them at no charge. We have also made minor spring adjustments to address isolated incidents of failure to battery (FTB) which are directly related to the off-center/light primer strikes. While we believe some of the FTBs could be the result of varying grip issues, everyone will benefit from this adjustment. Finally, in order to curb the potential of barrel or slide wear in pistols with a tighter tolerance stack, we have made two relief cuts to the barrel. Though this wear is only cosmetic and has been determined by tireless R&D efforts to confirm that it has no relationship with some of the issues experienced, these cuts will minimize most show of wear. SIG SAUER appreciates the excitement around this game-changing pistol, and we look forward to your continued support and helpful feedback."
Hmm, atleast one gun smith in vid above says it was likely contributory.