I bought a Ficus from Ikea some 4 years ago and have not had any problems until now.
About 4 days ago I noticed some leaves had turned black and fell off very easily. I disposed of them to make sure it was no one-time issue. Today, some leaves are slowly starting to turn black again. The image I posted is of a leaf I just removed.
I pruned and repotted my ficus about 2 months ago. I try keeping the roots dry as best as I can and water it when the soil gets dry (about every 7 days). It faces the east and has started to receive increased sunlight during the early hours of the day, but it has been in the same spot for years and has had no issue with bright sun in the past
I hope you can help identify the issue!