It did not allow to open spoilers on some sites.
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Не позволяло открывать спойлеры на некоторых сайтах.

I do not expect from an extension like this to work perfectly on all web sites, and I would be happy to give it five stars IF there was not a major flaw: it interferes with some web sites and even with some other extensions.
For example it interferes with Google Maps, making it impossible to move the map with the mouse. The extension must be disabled then. And this is not the only web site with similar problems.
Also it interferes with an extension I use all the time: "Swift Selection Search", and perhaps others.
Basically, I have to keep it disabled, and enable it only if the need for it arises.

If the author cannot find a way to correct this problem, could he at least add a quick disactivate/activate option from the extension's icon.

Works for the most part but today I discovered it was the reason I could not send comments in Facebook. It stopped the function of the Enter button on my keyboard from sending, and instead made it work the way it works in MS Word and it creates a new line to type in.

So I love this add-on HOWEVER. . . and it is a big however. . . If breaks functionality for Facebook for me. When I have it turned on I can no longer hit enter to respond to comments or even to hit enter to send in messenger. It also breaks the notifications menu on facebook to. Nothing loads and it stays blank.

Situation. (with the addon NOT in use but enabled.)
I type a post and then CLICK post on my profile. - That works.
I then go and click comment on that post (or any post) and type my comment in. After I type it in when I HIT ENTER to send it. . . . it never goes. It shifts down farther and the original Font image pops up with my message overlayed on it. Again, the "Aa" that is in the area where you type BEFORE you actually type anything pops back and my text is on top.
This would be 5 stars for me if I didn't have to disable it for Facebook functionality. Please fix the bug when you get a chance.

Overall excellent, but it breaks some websites even when they are not selected to be enabled by app. I wonder if the auther could include a whitelist section off the app that would disable it from certain websites all together. An exaple is google maps, you can not pan in map when app is enable, not not selected for websites use.

It's a good addon but it breaks video controls on sites such as Twitter.

edit: Revert to 1.3.6 and it works fine.

doesnt work with https://thermalimagingcamerareviews.com/

In some websites the blue text-marked selection box doesn' appear

Works well, but it would be more handy to have it enabled for all websites by default!
This sole thing is very unconvienient, I'd love to modify that.

I miss the time it was integrated in FF preferences…

Can't drag video position on Youtube, after enabling this addon. Except this drawback, everything else works, even on some websites where other similar addons are unable to show the popup.

@Firebreathing, I totally agree with your statement.

I feel uneasy about this new permission all of a sudden and disable the extension for the time being until the dev explains or I find a replacement.

Before "Access your data for all websites" permission was NOT needed.

09 June 2019 - This extenstion has started breaking down fb page. With this extenstion installed and enabled, and both modes on, I can't post comments on FB. I then starten ff in safe mode disabled-enabled all extensions one by one, finding that only this extension disabled removes that problem, so this is the culprit.

couldn't find any kind of link here, to go to its website and post bug there, hence had to post here.
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previous review - Why doesn't it offer "enable" and/ or "absolute" as a default for all sites? it is sort of helping sites in principle to block normal browser tools. bad policy. thanks.

Does not always enable image copy.

Not working everywhere.It a 50/50 for me.
RighttoClick was working much better.
Sometime a change to Waterfox only for that.
Firefox Quantum was the worst decision.