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Bug 127178 - spell checker lags, only underlines wrongly spelled words later, with a delay
Summary: spell checker lags, only underlines wrongly spelled words later, with a delay
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Writer (show other bugs)
(earliest affected) release
Hardware: All Linux (All)
: medium normal
Assignee: Not Assigned
Depends on:
Blocks: Spell-Checking
  Show dependency treegraph
Reported: 2019-08-27 06:36 UTC by peter josvai
Modified: 2020-09-04 11:24 UTC (History)
2 users (show)

See Also:
Crash report or crash signature:


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Description peter josvai 2019-08-27 06:36:23 UTC
the moment LibreOffice was installed, I mean, Writer, 
I saw that something was wrong, the behavior of the spell checker changed... 
it was just hard to catch what this change was exactly...

generally, I experienced that it was slow, even lagging, that is, showing the results only ONE PHASE later... not when you would expect it...

by "showing the results" I mean, underlining a word or removing the underlining... (due to correction)...

Steps to Reproduce:
1. write sdfsdfsdfsdfds
2. hit space

Actual Results:
sometimes it is NOT underlined...
then you hit space again, and then it would be underlined...

right now I have a document in which 
in one paragraph I can hit space once and the underlining appears promptly, but one paragraph above, I write "fgdfgdgdfgdf" then hit space, and nothing happens.

one more piece of info:
now I closed that document...
reopened it...
and in the erroneous paragraph above the good one, there is NO underlining..

+ one more:
I copy-pasted these two paragraphs into a new document, and both paragraphs work fine...

- - - 
another version of this behavior is that as I'm writing, there are underlined words above where I am, and they are already correct... but still underlined...

so I will go there, try to check them, try to correct them, but find that they are already correct... 
and then I'll have to place the cursor after them and hit space... 

Expected Results:
when I correct a word, it should be underlined or cleared at the next keyboard hit..

Reproducible: Always

User Profile Reset: No

Additional Info:
this behavior appeared right after installing version
and I run into it every time...

- - - 

Build ID: 1:6.3.0-0ubuntu0.18.04.1~lo2
CPU threads: 2; OS: Linux 4.15; UI render: default; VCL: gtk3; 
Locale: en-US (en_US.UTF-8); UI-Language: en-US
Calc: threaded

[Information automatically included from LibreOffice]
Locale: en-US
Module: TextDocument
[Information guessed from browser]
OS: Linux (All)
OS is 64bit: yes
Comment 1 peter josvai 2019-08-27 06:47:12 UTC
ONE more example of this behavior:

1. you write docuumentary
2. move on... do whatever until it is underlined...
3. place the cursor at "u" and hit backspace...

what happens:
the underlining doesn't disappear

it will only disappear when you place the cursor after the word (for example) and hit space or anything)... that is, +1 keystroke...
Comment 2 Xisco Faulí 2019-09-23 14:36:56 UTC
Thank you for reporting the bug. To be certain the reported issue is not
related to corruption in the user profile, could you please reset your
Libreoffice profile ( ) and

I have set the bug's status to 'NEEDINFO'. Please change it back to
'UNCONFIRMED' if the issue is still present
Comment 3 peter josvai 2019-09-24 06:39:52 UTC
I've reseted the user profile and the issue appears to be GONE.

sorry for not doing this first :( 
and thanks!

Comment 4 peter josvai 2019-09-24 07:33:49 UTC
the issue is NOT GONE completely...

one example:
I just saw the word "up" underlined as wrong spelling...
and I had to put the cursor next to it, and hit space, so it would disappear..

this incident has not been the only one since (30 minutes ago) I thought it was all gone... this was the last straw :) 

I'll try to observe it more carefully...

once again, the problem is that underlining should dis/appear in real time, not with a lag...

say, as you change appple to apple, underlining should disappear right away...

whereas with changing apple to apple, we DO expect a lag, 
CAUSE the application needs to know that you have finished with typing your word :)

this is what we can call the normal behavior, I suppose...
this is how Mozilla firefox's spellchecker works, for example...
and this is how Libreoffice Writer's used to work, allways.. until recently..

I'll report back soon...
Comment 5 peter josvai 2019-09-24 07:34:17 UTC
sorry for the status overwriting!!! :)
Comment 6 Dieter 2020-03-27 08:24:31 UTC
Peter, unfortunately nothing has happened with this bug report for more than half year. So I'd like to ask, if it is still valid, because a new major release of LibreOffice is  available since this bug was reported. Could you please try to reproduce it with the latest version of LibreOffice from ? I have set the bug's status to 'NEEDINFO'. Please change it back to 'UNCONFIRMED' if the bug is still present in the latest version. If it's still present, please update the steps to reproduce, because as far as I understood, the behaviour you described in comment 4 is a bit different than the behaviour in your initial bug report. Thanks.
Comment 7 Telesto 2020-09-04 11:24:38 UTC
Maybe related to bug 136294?