Spurious WMS Requests when adding a new layer

[qgib]

Author Name: Jonathan Moules (Jonathan Moules)
Original Redmine Issue: 21037
Affected QGIS version: 3.4.3
Redmine category:web_services_clients/wms

---

If I add a WMS layer, QGIS requests it and renders it.
If I add a second WMS layer, QGIS requests the new layer, but also requests the OLD layer too (as a separate GetMap request).
If I add a third layer (from a completely different service), QGIS sends requests off separate GetMap requests for all THREE layers.

There's no panning/zooming/resizing etc. going on here.

Surely QGIS should be using the cached versions of the earlier layers when a new layer is added? I can see this wasting a lot of bandwidth at both ends.

[gioman]

Is this relevant in recent QGIS releases?

[github-actions]

The QGIS project highly values your report and would love to see it addressed. However, this issue has been left in feedback mode for the last 14 days and is being automatically marked as "stale".
If you would like to continue with this issue, please provide any missing information or answer any open questions. If you could resolve the issue yourself meanwhile, please leave a note for future readers with the same problem and close the issue.
In case you should have any uncertainty, please leave a comment and we will be happy to help you proceed with this issue.
If there is no further activity on this issue, it will be closed in a week.

[github-actions]

While we hate to see this happen, this issue has been automatically closed because it has not had any activity in the last 42 days despite being marked as feedback. If this issue should be reconsidered, please follow the guidelines in the previous comment and reopen this issue.
Or, if you have any further questions, there are also further support channels that can help you.