Half suggestion/half bug but mostly the consequence of the current (1.11 ... since 1.09?) difficulty in getting invasions to fire for the player. Playing as the UK right now ive stopped attempting invasions. This in turns means pretty much parking my battle ships in Northern Europe. the possibility of making invasions had me trying to strategize a strong detachment fleet to invade in some distant sea. Currently you can sit on them for months blowing a turn worth of BC construction in funds time and time again without getting it to launch.
Not so much specific details right now.
More encouraging that it be a focus for major code tracking, of which there is only so much manpower for.