4.24 : Light Map Coordinate Will not Change off of 0

Since updating to 4.24 i have been experiencing an issue where I can not change the light map coordinate index off of channel 0 when assigning a channel for light maps. Channel 0 is the texture uv layouts and I have a custom channel 1 for lightmap channel. Each time i type in the letter 1 it resets to 0. I am building static lighting and will continue to have overlapping light map bake errors until a fix is found. Just for troubleshooting purposes i selected the generate lightmap uvs instead and applied it. It did create its automatic uv layout and applied in in channel 1. Now when i put in a 1 it starts to apply it and i get a engine crash every time. Please help and or put out a fix soon. Thanks!