Huge trade deficit
And India is all the time pressing for land transit routes to NE India, and putting paper obstacles to export of suitable Bangladeshi products to India which are in great demand, specially in Eastern India.
Being born and educated in (former) Calcutta during the British days, I can claim to some extent to be familiar with the Indian psyche. India is acting like a big brother, as the surrounding nations in Saarc are much smaller. This negative attitude has to go. Friendly 'paper' relation is not worth the paper it was written upon.
How long the gift of the gab will continue? Where there is a will, there is a way. Apply school-day proverbs, before tackling issues which need PhD expertise!