Why was IKEA accused of greenwashing?

Could you elaborate on the reasons why IKEA faced accusations of greenwashing? Was it due to discrepancies between their environmental claims and actual practices? Did they fail to meet certain sustainability standards that they had publicly pledged to uphold? Or perhaps their eco-friendly marketing tactics were deemed misleading and exaggerated? It would be insightful to understand the specific allegations levied against IKEA and the evidence that supported these accusations of greenwashing.