My group has spent the past few sessions on the same map (Wave Echo Cave for Lost Mine of Phandelver). Each character has a sheet in the journal section assigned to me and the player. Each character has a token associated with the sheet. The first session went as expected. Since then, we've had problems with some tokens disappearing. We've tried different browsers but that hasn't helped. The rogue's token is visible to some players but not others (including me, the DM). I created a new token and associated it with the character sheet, but that disappeared in the next session. The cleric's token also disappeared. I created a new one and it seems to be working now that we've straightened out some lighting issues, but the rogue's token is still not visible to most of us.