# 'max post length' + 'Change Timestamp' randgeval

**URL:** https://meta.discourse.org/t/max-post-length-change-timestamp-edge-case/281960
**Category:** Bug
**Tags:** pr-welcome
**Created:** [12 oktober 2023 om 05:29 UTC](https://meta.discourse.org/t/max-post-length-change-timestamp-edge-case/281960 "2023-10-12T05:29:20Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![markersocial](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/markersocial/32/170136_2.png) [@markersocial](https://meta.discourse.org/u/markersocial)
#### Post date: [12 oktober 2023 om 05:29 UTC](https://meta.discourse.org/t/max-post-length-change-timestamp-edge-case/281960/1 "2023-10-12T05:29:20Z")

</div>

This is a minor edge case (stable 3.1.1).

### How to reproduce:

- Publish a topic that uses roughly the maximum character limit as per ‘max post length’
- Set ‘max post length’ to a lower value e.g. 50% of the previous value. The length value must be lower than the characters used in the topic published in the previous step.
- Go to the topic created and click the topic actions menu spanner → ‘Change Timestamp’

The topic will appear to update, but the date will stay the same and no error is given. I believe the sidebar scroll will show the first post at the new date iirc, but topic date will still show the previous date.

I think this case should either update the timestamp, or show an error (like when attempting to edit an existing topic with a revision that has a character limit above the max post length).