Formulas are born with protected size stuck. The only way to resize them is: 1. right click 2. open "position and size" window 3. uncheck "protect size" 4. manually change "Width" value 5. OK. Once pressed ok, size is protected anew, and the procedure must be repeated if size not ok.
It is not a bug because formula are not drawing objects. To change the size of the formula you have to change the size of the used font. For example, in a new presentation document, insert the last formula given as example, that is : f ( x ) = {1} over {%sigma sqrt{2%pi} }e^-{{(x-%mu)^2} over {2%sigma^2}} To change its size, you can do that: size 36{f ( x ) = {1} over {%sigma sqrt{2%pi} }e^-{{(x-%mu)^2} over {2%sigma^2}}} Closing as duplicate of bug 89191. Please see https://bugs.documentfoundation.org/show_bug.cgi?id=89191#c2 and bug 75408. Best regards. JBF *** This bug has been marked as a duplicate of bug 89191 ***
@jean-baptiste while I do understand what decided for bug 75408 (LO Writer), I don't think this make much sense in the usual workflow in slides drawing (LO Impress). All objects in a presentation have a visual meaning, and their relative size (as well as position, color, etc.) is chosen to reflect the author's opinion on importance, desired impact, user experience, whatever. In order to obtain this, it is important (and possible on every powerpoint clone on earth) to have visual feedback while changing sizes. Also it seems to me that the necessary code already exists (infact I can change size on the width value, and I'm not forced to scale the font in formula editor). So, why lock it?