some sites like temu.com broken when i ON this extension

It works, but it's basic.

I wish it had fully featured side by side panels like in other modern browsers.

This basic implementation locks in the website in the sideview, which means you can only navigate by the items in the webpage. If you want another website in the sideview, you have to visit it in a regular tab and then click 'view in side view'.

A big negative for me is that your extensions do not work in the side view.

This extension definitely breaks Google Meet.

Meet works in Private Browsing, so after disabling add-ons one-by-one, it was this and only this extension that affected Meet.

Shame, because I use Meet more than I used this useful extension, so this had to go :-(

Its broking some sites

quite terrible. takes over your sidebar so if you have vertical tabs there you can say bye bye to them.

It took me some time to discover why Pinterest uses mobile layout, now I know Side View does it

Causes some websites to show in mobile version.

Add-on bug with Pinterest desktop keeps forcing itself into mobile view

With this addon, some sites automatically switch to mobile lightout.

Yup.. this takes up 10-20% of your screen making this utterly useless. WHY would ANYONE make this garbage tool. I can see the use of this for stock tickers.... maybe... that's about it.

Ad-blocker doesn't work in it

分栏浏览是个不错的想法。这个功能类似EDGE中的划词分栏搜索显示，不过edge不会占用现有的侧边标签栏，而是在另外一侧打开。
所以，我的建议是分栏窗口不要占有现有的侧边栏。
标签栏在左，那请你的sede view到right去，反之同理。


体验太差了，很难想想这是官方出的插件。
（1）打开爱奇艺网站，直接用sideview看的话，广告过滤插件就不起作用了，说明这个sideview是独立的。而我正常的网页是可以用正常的广告过滤插件的。
（2）同样的网站让要选desktop还是app,但是却选择不了...
(3)哪些是sideview正开的又如何切换，这没有友好的操作体验。。。
装了之后直接就删除。

El tamaño es ridículo, ¿por qué no dejarlo a gusto del usuario?

Seriously why would you not allow more than 20% of the screen? This is a toy. It would be useful for actual work if I could split my entire screen in 2 equally big tabs. Missed opportunity.

Who thought it was a good idea to limit max width?

I had high hopes for this but in its current state, I rarely use it (and just now disabled it). The limit is absurd (hardly any width).

Firefox needs a split screen mode like Vivaldi, where tabs can be split into 2/3/4 screens. Let's start with 2 for now but allow us to remain in our session and not log us out. Let the page not reload just for opening it in a split view. This actually signs you out of the website (the one in the side view). It reloads the tab when you add it to the side view. It's all over the place when it comes to websites where you're signed in.
It's really a very bad implementation and it's clear that care is not given to this add-on, which is unfortunate.

Allow us to split screen an .html file (that I open from my Desktop, which opens in Firefox) with a on-the-Internet tab.

I really want a real split screen add-on, one that also would let us resize to our heart's content and not be limited as we are now. One that displays the tab without reloading, without signing us out, without a new cookie or whatnot. Look at Vivaldi's Page Tiling and imitate that, that's all!

Edit: Use Tile Tab add-on, it's good enough for now but not like Vivaldi's and Edge's implementation, which are the best.

Edit 2 Sept 2022: This broke Asana and it would get stuck at the Download Asana App rather than log me in to the task view.

Edit: July 2024: I tried it again for 2 months but is still breaks websites and also Temu remains in mobile mode. I couldn't figure it out until I recalled that this is active. Deactivated right away. What a buggy mess! Made by Mozilla themselves too lol. Embarrassing.