551971 - Firefox extension Icons inconsistently visible

Status: RESOLVED INVALID

(Firefox :: Extension Compatibility, defect)

Description

[sid]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6 (.NET CLR 3.5.30729)
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6 (.NET CLR 3.5.30729)

I have a number of extensions that place icons on the bottom border area of the screen, namely Fireform, Fireshot and Pixlr Grabber, but often only Pixlr Grabber's icon appears. I have found a way to get them to come up after a failure, and that is to go to the extensions tab on the Add-Ons tool, deactivate any extension, immediately reactivate it, and restart Firefox. All icons are then in their proper spots unlit I close and restart Firefox again.

Reproducible: Always

Steps to Reproduce:
1. Open Firefox and see missing icons
2. Open Add-ons tool and deactivate any random extension
3. Reactivate that same extension
4. Close Add-Ons application
5. Restart Firefox and all icons are in their proper places
Actual Results:  
Icons appear proprly only after this "dance"

Expected Results:  
Icons should always appear in the same place

It may be a conflict of some kind between just these three or any pair of these particular extensions, or it could be a general incompatibility of one or more of them with the current version of Firefox. This is a relatively new occurrence, but I did not make a report until I found a partial fix, which may hint at the solution.

Comment 1

[Andy McKay]

Legacy extensions are no longer valid in Firefox 57, closing.