We are using ACF flexible elements to layout the homepage so the client can edit it.
1.7.1 is working fine. After updating to 1.7.3 the order of the blocks is not as it is in bricks editor. It keeps shuffling the order. Downgraded to 1.7.1 works again.
Unfortunately, I cannot reproduce the issue. Would you be so kind as to provide a live link and a screencast using https://birdeatsbug.com or https://jam.devshowing and explaining what’s going on?
Also, you can try if it works with the recently release Bricks 1.8 beta But, as with any beta release, please do not use it on any production/live website. It is only meant for testing in a local/staging environment.