Browser issue Bottom panel is jumping causing high CPU loading

akok

akok

Active member
Affected version
2.x
Hi!
After moving to XenForo 2, we have such problems in Opera Presto users:

1) Bottom panel is jumping. It can be reproduced within any topic (like this one on your forum) as well as in PM (not reproduced within list of threads).
You can see bug on this video.
Sometimes it's jumping so ofter, preventing user from setting cursor on the field to write new message on the topic.

2) After pressing Insert -> Code -> click "X" (Close), browser freezes completely. Only killing with Process Manager helps.

3) Periodically hang when you are moving from one PM to another and other circumstances. Can be reproduced stable.

4) It's often when you cannot write message. After clicking in the message field, focus is just not activated. Pressing on some button in BB-code panel helps in this case.

Used last update: Opera Presto 12.18. Totally, users just cannot use the forum, because it periodically and completely hung.

We really hope for the solution of this problem.
Thanks.
 
Generally speaking, at this point, I don't think Opera 12 can really be considered supported. The last non-security-only release was back in July 2013. For frame of reference, that predates IE11's official release and the current release is now Opera 50. Beyond that, Opera's market share was never significant before, but there is very little share for this version today.

The first issue looks like it's a CSS bug, likely due to flex box issues.

The other issues sound like they're related to the rich text editor, which is a very advanced component. Users can disable this using the gear icon on the editor.
 
1) Last opera update was on 2016 Opera 12 and Opera Mail security update - Opera Security
However, yes, you could say it is related to security, because generally it's improved interaction with certificates. But this is not just patching the hole (it wasn't there), namely, rework. And apart from this problem with the certificates, at that time, Opera worked correctly with all sites. And Opera 50 is essentially a Chrome.

2) If you say that jumping bottom is related to .css, why do this problem disappear after disabling JS ?
E.g. for Intel core i7, it cause increasing CPU loading on 1 of cores up to 25 % just because of panel jumping.

3) About switching the editor to the simplified mode... if user switches to it, he can't insert a code tag at all (like any other tag). It's clear that if he can't insert it, then he will not have problems with its cancellation. Besides, anyway it doesn't help: browser enters the state "not responding", so to write a new message forced to close browser with Task Manager.

I noticed "browser's issue" label is assigned to this topic. But such a way, most bugs can be called as browsers' issues. Instead, you can correct the error in the code that leads to this. Or at least, to look why these things happens.
 
akok said:
I noticed "browser's issue" label is assigned to this topic. But such a way, most bugs can be called as browsers' issues. Instead, you can correct the error in the code that leads to this. Or at least, to look why these things happens
Click to expand...

But fixing the code for Opera which is basically an irrelevant browser may break things in Chrome, Firefox, Safari, or even Edge(IE) which are relevant browsers and would be better that those browsers are supported than one that has little marketshare. It may not break anything in those browsers just stating something that could be a possibility but browser issue seems a suitable label for this issue as that's what it is a browser issue.
 
We do have to mark a number of bugs as browser issues but if it is a currently supported main branch version of the browser and the issue isn’t beyond our control then we will attempt to fix it.

We attempt to consider the current browser version and its previous version as current so in the case of Opera that would be version 50 and version 49. Anything prior to that wouldn’t be considered as supported and therefore at that point all we can suggest is you upgrade or change your browser.
 
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