No repro with

Version: 6.0.0.0.alpha0+
Build ID: 376e27dd498d64212e570354a94c527b37d367b1
CPU threads: 4; OS: Mac OS X 10.12.6; UI render: default; 
Locale: fr-FR (fr_FR.UTF-8); Calc: group

No repro with

Version: 5.3.4.2
Build ID: f82d347ccc0be322489bf7da61d7e4ad13fe2ff3
Threads CPU : 4; Version de l'OS :Mac OS X 10.12.6; UI Render : par défaut; Moteur de mise en page : nouveau; 
Locale : fr-FR (fr_FR.UTF-8); Calc: group



Seems like the problem is limited to OSX 10.9 unless you can also reproduce on a more recent OSX version. In the meantime, I will add 10.9 to title.

If it can't be reproduced on a current version of macOS, then it is even more unlikely to get fixed, as statistically we have few, if any, QA testers using OSX 10.9, and even fewer developers using that version.

Pierre-Alain: would it be possible you attach a backtrace?
For the test, could you rename your LO directory profile (see https://wiki.documentfoundation.org/UserProfile#macOS) and give a new try?

Finally, do you use any accessibility feature? If yes which ones?

Just for the record, on MacOS 10.12.6, with master sources updated some days ago, I don't reproduce this.

(In reply to Julien Nabet from comment #4)
> Pierre-Alain: would it be possible you attach a backtrace?

I don't know how to do this. I user soffice --backtrace withe the terminal but see no log...

> For the test, could you rename your LO directory profile (see
> https://wiki.documentfoundation.org/UserProfile#macOS) and give a new try?

using a new profile do not solve the issue.
 
> Finally, do you use any accessibility feature? If yes which ones?

I think i do not use accessibility feature (are you talking about macos accessibilty feature ?)

About backtrace, you may find some information here:
https://wiki.documentfoundation.org/QA/BugReport/Debug_Information#Mac_OSX:_How_to_get_debug_information

For accessibility part, here's a questionnaire I retrieved from an old Roman Eisele's comment:
"
1) Do you have any accesibility features enabled? Apple’s accessibility
features like “VoiceOver” or “Enable access for assistive devices”, which get
enabled in “System Preferences > Universal Access”, are known to cause many crashes and freezes in LibreOffice. So please try to disable any accesibility features, then check if the problem is still reproducible.

2) Do you have installed any window management/user interface utilities/apps/control panels/extensions for Mac OS X like
   * AquaSnap                * BetterSnapTool
   * BetterTouchTool         * Breeze
   * Cinch                   * Divvy
   * DoublePane              * Flexiglass
   * HyperDock               * iSnap
   * Moom                    * RightZoom
   * ShiftIt                 * SizeUp
   * SizeWell                * Spectacle
   * Stay                    * TileWindows
   * WindowTidy              * Flavours (from flavours.interacto.net)
... or something similar?

And/or do you use any mouse cursor/pointer utility, i.e. some little application or control panel etc. which animates or replaces etc. the mouse curser/pointer, like
   * LazyMouse?

And/or do you use any special software which could be related to accessibility stuff, e.g. a screen reader, screen magnifier, speech recognition software,
a text-to-speech (dictation) application, or similar?

All these and many similar utilities rely heavily on Mac OS accessibility features and therefore can cause LibreOffice to crash or freeze. So please check if you have installed any utility of this kind and try to disable it
(or to add LibreOffice to the list of excluded applications for the utility,
if there is such a thing).
"

(In reply to Julien Nabet from comment #7)
> About backtrace, you may find some information here:
> https://wiki.documentfoundation.org/QA/BugReport/Debug_Information#Mac_OSX:
> _How_to_get_debug_information

Sorry but it only indicate debug when app crash (this is not the case).
I found no information related to backtrace for MacOS...

> For accessibility part, here's a questionnaire I retrieved from an old Roman
> Eisele's comment:

OK thanks.
No i do not used any accessibility features and no addon software.
I reproduce this "slow" bug with MacOS X 10.12.6 on a brand new MacMini at work (brand new, no previous MacOS and no previous LibreOffice, just a complete fresh install).

Hi Pierre-Alain Dorange,
Could you please try to reproduce it with the latest version of LibreOffice
from https://www.libreoffice.org/download/libreoffice-fresh/ ?

Dear Bug Submitter,

Please read this message in its entirety before proceeding.

Your bug report is being closed as INSUFFICIENTDATA due to inactivity and
a lack of information which is needed in order to accurately
reproduce and confirm the problem. We encourage you to retest
your bug against the latest release. If the issue is still
present in the latest stable release, we need the following
information (please ignore any that you've already provided):

a) Provide details of your system including your operating
   system and the latest version of LibreOffice that you have
   confirmed the bug to be present

b) Provide easy to reproduce steps – the simpler the better

c) Provide any test case(s) which will help us confirm the problem

d) Provide screenshots of the problem if you think it might help

e) Read all comments and provide any requested information

Once all of this is done, please set the bug back to UNCONFIRMED
and we will attempt to reproduce the issue. Please do not:

a) respond via email 

b) update the version field in the bug or any of the other details
   on the top section of our bug tracker

Warm Regards,
QA Team

MassPing-NeedInfo-20180703