Yasmine Bleeth was a hot commodity on two soaps and later on Baywatch. It doesn't surprise me they held onto her, even if Lee Ann had a rocky start under Rauch. The thing with Nicholas Walker's Max is so gross. I'm not sure if they just waited out Bleeth's contract to play teen drama (the pregnancy and marriage to Kevin) or if they'd wanted her to stay longer, but she clearly wasn't going to.
Stephanie doesn't seem to have ever worked - I think they recast a month in, and the character had only been on a little over two months before this nonsense with Kevin and his siblings trying to rescue her from Carlo. The whole thing with her singing Miami Sound Machine over and over is unbearable and I hope it wasn't Gottlieb's idea but given her focus on bringing in more contemporary music I wouldn't be shocked.
There were a lot of stories about Griggs being a problem BTS. I'm not sure if she even lasted six months on contract, as I think they brought her back in '92 for the Carlo murder mystery. I didn't know until recently there was any potential interruption in her run on the show. I may be wrong on that. This random hiatuses happened with a few people in both Malone runs, including Grace Phillips in 1992 who allegedly had a bad relationship with Gottlieb and bolted or was fired fast. From what I've seen she was very good. I know she was off for months and months after being played very heavy in early '92, then when she returned for maybe one or two days in November engaged to Bo she died in the car crash immediately.