Please be aware of this News post made by Malcolm Lewis: <Default bootloader on Tumbleweed will be systemd-boot>
And, the following Wiki entry: <Systemd-boot>
But, please be patient – there’s this weekly Tumbleweed review from Dominique Leuenberger: <Tumbleweed – Review of the week 2026/9>
Reading the GParted documentation, you’ll have to boot “GParted Live” to see if, you can move the beginning of the encrypted LUKS partition to allow the EFI partition to be increased – there are some statements in the GParted documentation around this issue which suggest that, the chances of success are small.
Personally, I would reinstall Tumbleweed with the default EFI partition size.
<Live CD/USB/PXE/HD>