We had this issue as part of #23724 (moved) but it still seems to be not fixed. After the update to NoScript 5.1.3 (from 5.1.2) the icon jumps to the right and the following error is visible in the browser console
CustomizableUI: Widget 'noscript-tbb' not found, unable to move CustomizableUI.jsm:1149
Updating from 5.1.2 -> 5.1.3 let's the icon jump to the right. Updating from 5.1.3rc3 to 5.1.4rc1 does not do this in a comparable environment. Thus, seems to work for me, thanks.
So, I tried a bit but am not able to reproduce the issue. If anybody has steps to do so (e.g. starting with a clean Tor Browser 7.0.10 or 7.5a8) let us know.
I wrote about NoScript icon jumping in 7.0.10. I couldn't reproduce on a clean extract. I should have checked that before posting, I'm sorry about that. The extract that I used had extra add-ons installed, umatrix and ublock origin.
Same to 5.1.8.6. No improvement for over half a year, is NoScript dead?
This isn't an issue with NoScript, it happens even in the FF60-esr based Tor Browser nightly build with both NoScript WebExtension and HTTPS Everywhere.