---
summary: /sync gives bad prev_batch token for unlimited timelines
---
assignee: markjh
created: 2016-03-08 11:40:09.0
creator: neb
description: |-
  Submitted by @richvdh:matrix.org
  For an initial {{/sync}}, if a room's timeline is small enough to fit into the limit, we get a {{prev_batch}} which corresponds to the *end* of the timeline rather than the start. This is exacerbating https://github.com/vector-im/vector-web/issues/1089.
id: '12550'
key: SYN-645
number: '645'
priority: '3'
project: '10000'
reporter: neb
status: '10100'
type: '1'
updated: 2016-11-07 18:29:13.0
votes: '1'
watches: '4'
workflowId: '12650'
---
actions:
- author: richvdh
  body: Fancy taking a look, [~markjh]?
  created: 2016-03-08 17:58:20.0
  id: '12756'
  issue: '12550'
  type: comment
  updateauthor: richvdh
  updated: 2016-03-08 17:58:20.0
- author: richvdh
  body: 'Migrated to github: https://github.com/matrix-org/synapse/issues/1509'
  created: 2016-11-07 18:29:13.0
  id: '13816'
  issue: '12550'
  type: comment
  updateauthor: richvdh
  updated: 2016-11-07 18:29:13.0