this has just happened to me.
I planted crops, that was fine, I watered them, that was also fine.
Then in the middle of fertilising them I lost the action menu, litterly from 1 fert action to the next, the action menu disappeared.
I thought the server had gone down, so i logged out and saw the server was up on the launcher, so tried again. no change
I logged in and out a few times, no difference.
I deleted most of the files in the Data Folder, no difference.
Then i found this post and the OP's suggestion about scavving bringing back the action menu.
it worked, though I was foraging plants using the icons and then deleted them.
that brought the action menu back
So sorry whatever Fix you applied hasnt caught it.