COSEBIs B modes measured in KiDS-Legacy. Each panel is annotated with the p-value of the B-mode signals for twenty modes (black) and our fiducial 6 modes (blue). The total p-value for the full data vector, also for six and twenty modes, is annotated in the upper right corner of the figure. The B-mode signals are highly correlated across modes within a tomographic bin, so readers are cautioned against so-called ‘χ-by-eye’.