Community share dialog doesn't work as a guest

[turt2live]

Source: https://matrix.to/#/!iNmaIQExDMeqdITdHH:matrix.org/$1549235029407470qFFQq:matrix.org?via=matrix.org&via=linuxgaming.life&via=disroot.org

[turt2live]

Fixed by matrix-org/matrix-react-sdk#2695