id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
18241	High CPU Usage	baptiste.millemathias@…	baptiste.millemathias@…	"JOSM uses a lot of CPU on my Linux box.
this is JOSM packaged as flatpak 

{{{
top - 20:12:14 up 3 days,  3:08,  2 users,  load average: 23,06, 16,72, 8,25
Tasks:   1 total,   0 running,   1 sleeping,   0 stopped,   0 zombie
%Cpu(s): 96,9 us,  1,1 sy,  0,0 ni,  1,5 id,  0,0 wa,  0,4 hi,  0,1 si,  0,0 st
MiB Mem :   7919,2 total,    257,2 free,   5492,8 used,   2169,3 buff/cache
MiB Swap:   8066,0 total,   6431,8 free,   1634,2 used.   1977,1 avail Mem 

    PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND
  68473 baptist+  20   0 8085440   1,5g  33244 S 766,0  19,4  51:33.88 java
}}}

I straced the process if it can helps to troubleshoot.
What kind of information do you need?"	defect	closed	normal		Core	tested	duplicate	flatpak