This update is more as a reference for others in case someone else experiences the same issue and is looking for more information.
I have had quite a large leak on the front passenger side of the Bronco when it rains (has not had heavy snow sit on it [yet]). The first time, I found quite a large puddle on the passenger side floor. Water was coming into the vehicle from the upper airbag compartment (located above the passenger seat) and down the A pillar. It was taken into the shop and a seal replaced. Did not fix the issue, as it was the same situation when it rained again next (this was about 2-weeks ago). Took it in a second time and there was much more done to remedy (replaced all seals, glue, sealer, strip calk in body seams, header seal). It rained again the last 2 nights and unfortunately the issue persists...
This time when going out to assess the leak I noticed nothing was coming in from the airbag compartment, just in from down the A pillar. However, I noticed a little moisture at the seam of the upper airbag compartment so I pushed on it. Water came pouring out.
I did notice there are quite a lot of other complaints related to this issue and a service bulletin (SB) had been issued (
SB 21-2403). The main cause tied to this SB are excess body gaps that require additional sealant to fill in the space (see figure 8 from SB below).
In addition to going to trying to work this issue out with the dealer I have two (2) case numbers with Ford, but those have not gone anywhere. I just get case numbers. From there it's radio silence, but I also understand there isn't much they can do but send me to a dealer.
I really, really love this vehicle. The quality issues Ford is facing is unfortunate. I am going to work with my dealer on round three to try to get this resolved. If it fails again, I don't know...

Figure 8 from SB 21-2403