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Can you provide a screenshot?

Attached a screenshot of my problem.

Are you using support library or native ActionBar..?

I'm using Native ActionBar.

I am experiencing this issue as well using the v7 AppCompat ActionBar library. The issue is resolved when the user rotates their device.

#6 Of course, the layout is entirely redone in this case.

I have the feeling from what I saw on my apps that the title might be truncated when it has been set to a short string and then a larger one is set. But I never could reproduce it consistently, from time to time it appears. anything that re-draw the activity correct it.

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Here is a solution for this:
1. get actionbar view
public View getActionBarView() {
    Window window = getWindow();
    View v = window.getDecorView();
    int resId = getResources().getIdentifier("action_bar_container", "id", "android");
    return v.findViewById(resId);
}
2. invalidate the actionbar after you set the title

Issue is not obsolete, using ActionBar.setTitle() still truncates a title longer than the previous title when there is plenty of room.  None of the workarounds out there have worked so far.

I am using the latest v7 AppCompat ActionBar and the issue still occurs. None of the workarounds work for me. How is this obsolete?

Stating that an issue is obsolete is the oldest trick a developper uses to reduce the number of bugs his project might have.

"What!?!  There are 150 unresolved issues on this topic ??"
"Uhh... Wait, all these bugs are from 2013, I close them, it's mid 2015 now"
"Oh, only 35 bugs left, good job man"

I still have this issue....

I too have this issue. How can this be obsolete?

Support v7 Action bar still have this issue

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workaround

getSupportActionBar().setTitle("");
getSupportActionBar().setTitle(title);

Just encounter this long standing bug, thanks for the workaround

Google still have a lot to learn, how can they mark this as obsolete.  It's a wonder anyone ever develops for Android.  They're just complacent thanks to their market share, but look what happened to Nokia.

Im still seeing this issue and setting empty string first doesnt work, why is this marked as wont fix?

This issue is not fixed. I still see this issue and no matter what I try, I see this issue. Even tried this StackOverflow solutions:
https://stackoverflow.com/q/15389663/878126

First title set determines the max length of the title for next setting of the title text.

I've starred similar reports here:
https://issuetracker.google.com/issues/37009620
https://issuetracker.google.com/issues/37125427

Thank you !

I'm on 5.0.1 now and problem is still there on my Nexus 4.
I'm a GTasks user and it will still not install and give the -505 error instead.

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same for me with different app....k-9 mail it is for me.....it is only the one, but that still is nagging

am on 5.02 nexus 5

Still persisting on 5.0.1 for me.  Utter Beta is the culprit.

I have the same issue, with new android version 5.0.2, the hash obtained by y device is different.

Any solutions?? I can't generate a new certificate for this app, because, then, I can't upload to play store, because de hashes are differents...

I am on 5.0.2 and still have the issue.

5.1 Nexus 5 still the same issue, why this is so difficult to fix while it's essential to developers?

I have same issue after installing 5.0 in Asus zenfone 5

I am having a problem installing applications microsoft family (Xbox One SmartGlass, MSN News, MSN Weather, Sports MSN).
Soon after starting the install applications occurs the error "-505".

Asus Zenfone 5.

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