I have about 145 blocks in a single Matrix. If I try and re-arrange (drag&drop) the first few blocks, and then hit save, all is well. However, trying to re-arrange the last few blocks doesn't save at all, reverting the order as soon as I refresh.
I've pumped the php.ini settings (
max_input_vars=4000) and set the block limit in CP to 200 so that shouldn't be the issue.
I'm also not getting a logged error.
Does this ring a bell with anybody?