ncurses bug? - "make nconfig" when building kernel is empty until I scroll

Hi!
I regularly build the kernel on my Tumbleweed system and I use

make nconfig

to configure it.
Since a few weeks, whenever I use nconfig to configure the kernel, the interface that opens up is almost empty: it only shows, at the top, the last entry of the list (which should be at the bottom). The other entries only appear as I start scrolling down to reveal them. The same happens whenever I enter any submenu of the nconfig interface. Refer to this video for a better understanding of the problem: https://drive.google.com/file/d/1UEEZwbwbKfTTbCBMmY_xDTEgWblbfbkQ/view?usp=sharing
Any idea what this bug could be related to? I’ve given a quick look at the ncurses bugs in bugzilla but did not find anything that could be relevant.
Cheers!