The National Highway Traffic Safety Administration is investigating a Ford Motor Co. recall of more than a quarter-million Explorer SUVs in the U.S. after receiving complaints about repairs intended to prevent the vehicles from unexpectedly rolling away even while placed in park.

The problem, ascribed to fractures of a rear axle mounting bolt that could lead the drive shaft to disconnect, was addressed by a Ford software update designed to apply the electronic parking brake if the drive shaft failed, the agency said. But according to two complaints from vehicle owners, their SUVs behaved erratically following the repair.

In one of those cases, the Explorer would reportedly slam to a complete stop at speeds of up to 30 or 40 miles per hour. In the other, it would reportedly lurch into motion while the driver was attempting to disengage the electronic brake. No injuries were reported in these cases.

A Ford representative said the company is working with the NHTSA on the matter.

After almost a year of working on a hybrid schedule with three days per week in the office, Comcast is planning to expand in-office time to four days per week starting in the fall, according to a company spokesperson.

The decision was based on observations from the past year of hybrid work, and a desire to provide more opportunities for collaborative work, in-person meetings and mentorship, the spokesperson said.

Office-based employees have been expected to come in on Tuesdays, Wednesdays, and Thursdays since September. The new policy requires four days in the office, and the specific days will be decided between employees and their managers based on their teams’ needs, the spokesperson said.