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Cant connect using 1.21.10

unconfirmed

Status: Open.

#1263 In ViaVersion/ViaBackwards;

· EbatteSratte opened on May 19, 2026

[1.21.11->1.20.11] Server on newer version sends ExplosionS2CPacket on entity dismount to the client

unconfirmed

Status: Open.

#1261 In ViaVersion/ViaBackwards;

· kodalee opened on May 19, 2026

Item Display Entity (1.21.4 format) is invisible for 1.21.3

unconfirmed

Status: Open.

#1255 In ViaVersion/ViaBackwards;

· Diner0l opened on Apr 25, 2026

i cant join my 26.1.1 server with ViaBackwards

unconfirmed

Status: Open.

#1247 In ViaVersion/ViaBackwards;

· DJJoe6895 opened on Apr 9, 2026

Leaf Litter replaced to flower

unconfirmed

Status: Open.

#1230 In ViaVersion/ViaBackwards;

· sapbotgit opened on Mar 30, 2026

Incorrect comparator remap 1.13->1.12.2

unconfirmed

Status: Open.

#1222 In ViaVersion/ViaBackwards;

· MasterDash5 opened on Mar 16, 2026

Running ViaBackwards on a 1.21.11 server causes players to become invisible

can't reproduce

Status: Open.

#1207 In ViaVersion/ViaBackwards;

· Zumbuh opened on Feb 15, 2026

Dialog Bug

bug

Status: Open.

#1199 In ViaVersion/ViaBackwards;

· goncalodelima opened on Feb 6, 2026

Mannequin Equipment fails to render to older clients

unconfirmed

Status: Open.

#1188 In ViaVersion/ViaBackwards;

· lordmurdercookie-jpg opened on Jan 19, 2026

The item settings component in server version 1.21.11 is no longer working in version 1.21.1.

unconfirmed

Status: Open.

#1177 In ViaVersion/ViaBackwards;

· craftorigin opened on Jan 9, 2026

Item flags not send to 1.9 on 1.21.8 server.

unconfirmed

Status: Open.

#1125 In ViaVersion/ViaBackwards;

· thelipe7 opened on Oct 24, 2025

ItemFlags are not hidden on old clients

unconfirmed

Status: Open.

#1121 In ViaVersion/ViaBackwards;

· Schneeeulen opened on Oct 17, 2025