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Font Size Spontaneously Changes


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Having a very strange issue.  Running an executable application under LabVIEW Runtime 2014 SP1 (patch f3, I think) on Windows 7 SP1.  The application has a few typedeffed system enums on the front panel.  After some amount of time (between 1 to 15 days is as precise a report as I have so far), the text of the drop down menu (not the main control) reduces font size to the point of being unreadable.  I can still select each item in the enum and the correct action results, so it appears to be just a cosmetic change.  I'm not even sure how I would intentionally do this, let alone why it appears to happen spontaneously.  If I exit and restart the application, everything goes back to normal.

Anyone seen anything like this?

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Does the user have multiple screens? I've noticed that when one LabVIEW window is moved to a screen with a different resolution and/or different DPI, all LabVIEW windows will change size. (I haven't seen the font shrink by itself without changing the window size, though)

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  • 1 month later...

Update on this (with pictures!).

Have now replicated this issue in our lab environment.  It takes between 7 and 8 days to show up, and affects both system and classic enums.

Pull Down Strangeness.png

Pull Down Strangeness - Classic.png

A possibly related issue that happens at the same time is the font size my screen title changes (seemingly spontaneously) from 91 to 4.

Normal (taken after a system restart)

Screen Title Font Size Change - Normal.png

Smaller:

Screen Title Font Size Change.png

 

JKSH - The user's computer have only one screen, and this application takes up the full screen.

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