Flash back

Bug reports
Always flash back, saveing files, opening files, refactor, subdivide… Many operations are performed with flashbacks and sometimes a certain step is lost. Hope to improve software stability!May Nomad do the better!
我使用的设备是ipad AIR3 剩余内存2G多(会是因为内存不够吗?),系统版本是IOS14.4
The device I’m using is ipad AIR3 with more than 2G of memory left (will the flash back is because there isn’t enough memory?), the system version is IOS14.4