B1 Pro

Possibly related: Severe key roll over problems for the Keychron B Pro series keyboards: B1 Pro possible bug. E.g., "While holding down the Caps Lock and S key, many other keys are not usable, e.g., the J, K and L keys." Keychron B6 Pro: Some rows of keys are not registered properly when holding dow

It also has severe key rollover problems. For example, B1 Pro possible bug. E.g., "While holding down the Caps Lock and S key, many other keys are not usable, e.g., the J, K and L keys." Keychron B6 Pro: Some rows of keys are not registered properly when holding down the right shift key unless previ

Re "the key rollover is quite poor in conjunction with the shift keys": I don't know about the B1 Pro, but I don't think the shift keys make a difference (as they have been placed in the keyboard matrix to cause very little conflict). It is equally bad without a shift key, at least for the K6 Pro.