I have the same issue. The homebrew solution is, go to fleet carrier service pannel and put the material in sell and buy it.
oo7
the problem with that is once it goes through FC commodity market, it no longer counts for merits (which was the whole point in my mining it). I mined a little bit of stuff this morning, stored it on carrier so I could go hit the titan for the CG, came back, mined some more, went to pick up the first batch of minerals to go sell it all and... can't. Releasing the Cobra Mk V (which I bought immediately) does
not make up for the long list of gamebreaking bugs (this one, the odyssey mats/bartender bug which they said was fixed in this patch and was not, rares and escape pods, NA players not being able to do Power CZs in Open Play, and I'm sure there are others I haven't been effected by) and definitely doesn't make up for the complete lack of communication as to whether they're even working on fixing any of it.