The story says the problem is not because of the wooden construction. On the other hand, you don't want mold growing on your building, whatever the reason.
From Dezeen, August 30:
Mould is growing on Gaia, a mass-timber business school in Singapore that was completed last year for the Nanyang Technological University by Japanese architect Toyo Ito and Singapore-based studio RSP Architects.
Nanyang Technological University (NTU) claimed the 43,500-square-metre school was "the largest wooden building in Asia" in terms of the volume of timber used when it opened in 2023.
The university announced this week that mould was reported to have been growing on the exterior and interior structure.
After gaining insight from two independent experts, NTU claimed that most of the mould was found on air-conditioning supply grilles and on furniture surfaces.
The two experts concluded that the mould growth occurred due to condensation and exposure to rain, rather than the timber.
"Condensation occurs when the external humid air comes into contact with cooler indoor surfaces, such as when windows and doors of the offices are opened for prolonged periods," said NTU....
....MUCH MORE, being dezeen they have lots of pictures.