The Mirror/Symmetry tools will stop working after Several minutes of use. It is not a set amount of time, and it doesn't always happen. But it does happen enough to have become very frustrating. After that, it will work for new projects/files but not for the particular projects in which it ceased to function. Do you know what could be causing this? Is there a fix for it?
No, I have no idea, and I do not see this happening. Unless you happen to be using a brush preset for the Quick brush engine: those do not work with mirroring. Or maybe you made a selection? In any case, please update your version of Krita: the current release is 4.1.1.
Please update to 4.1.1 and try to reproduce: if you can still reproduce it, check whether you have created a selection, and whether this happens with all or most brush presets. Right now there isn't enough info to start looking into whether this is a possible bug.
Dear Bug Submitter, This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information as soon as possible and set the bug status as REPORTED. Due to regular bug tracker maintenance, if the bug is still in NEEDSINFO status with no change in 30 days, the bug will be closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging If you have already provided the requested information, please set the bug status as REPORTED so that the KDE team knows that the bug is ready to be confirmed. Thank you for helping us make KDE software even better for everyone!
Dear Bug Submitter, This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging Thank you for helping us make KDE software even better for everyone!