are you using the new wallet?  I'm still using the previous version (does not include coincontrol). and have had no issues yet.  its possible the new wallet has some bugs, so if u switch back to the previous should be okay and no coins missing. (they will be returned after resync/reindex if they do not exist on official blockchain)

i think it maybe its the new wallet, not a block explorer/blockchain problem. especially since you were able to send before and that show on the official block explorer same as the other test transactions i made.  You can switch back until the dev checks it out as it the coincontrol version is optional update