I have successfully installed Ubuntu 24.04 on my Lenovo Thinkpad T490 with a multi-boot setup and an existing EFI System Partition. But the install fails on the Manual partitioning screen for my Dell Latitude 7490 which has two other OSs on it. I chose the partition and mount point / and assumed it would use the same EFI System Partition as the other two OSs. But the Next button is still grayed out. Any ideas?