OMG, i ran into this issue and what fixed it for me was...increasing the font size! Slowly over the last couple of years i have been increasing the font size ev

OMG, i ran into this issue and what fixed it for me was...increasing the font size! Slowly over the last couple of years i have been increasing the font size everywhere (because my eyes are aging!)...and then i started using Geany - which i do like - but ran into this odd behavior of underscores appearing like spaces but only with some themes, fonts...And when i went to increase the font size - for just helping me see better - voila; no more odd behavior! Admittedly, this is not the reason i lessen my use of geany. But that sure was one odd bug. EDIT: It seems the font/underscore/spaces issues should be fixed as of Geany verion 1.37: https://www.geany.org/documentation/faq/#geany-does-not-display-underscores-anymore https://www.geany.org/documentation/faq/#geany-does-not-disp... I'm not using Geany much at all any more, but still got love for it!