Post Injection is a difficult feature for some reason. Fixing it will take some time. So in the meantime we’re rolling Post Injection back to what it was in version 4.12. It’s not perfect, but at-least it worked a little bit.
Some widgets had issues with a stray network variable, which has been resolved and shortcodes did something dumb with W3 Total Cache – Not sure how that happened, but it did. Now it’s fixed.
Some users of older licenses (starting with 101) had trouble activating or de-activating their license some times. This has been resolved too.