A lot of font data being cached

Hi! I have some warning from widget’s text. Who can explain me this warning?

[2020.07.08-15.30.27:001][465]LogSlate: Took 0.000169 seconds to synchronously load lazily loaded font '../../../Engine/Content/EngineFonts/Faces/RobotoBold.ufont' (160K)
[2020.07.08-15.30.27:013][465]LogSlate: Warning: SlateFontCache - Setting the threshold to trigger a flush to 2 atlas pages as there is a lot of font data being cached.
[2020.07.08-15.30.27:015][465]LogSlate: Warning: SlateFontCache - Setting the threshold to trigger a flush to 3 atlas pages as there is a lot of font data being cached.
[2020.07.08-15.30.27:018][465]LogSlate: Warning: SlateFontCache - Setting the threshold to trigger a flush to 4 atlas pages as there is a lot of font data being cached.
[2020.07.08-15.30.27:929][507]LogSlate: FontCache flush requested. Reason: Font Atlases Full; 5/4 Pages; frames since last flush: 43
[2020.07.08-15.30.27:933][507]LogSlate: InvalidateAllWidgets triggered.  All widgets were invalidated

got the same problem any help?