High CPU usage in linux. Battery draining.

[LiquidO2]

Nylas mail is causing super high cpu usage.
I am sure it is Nylas mail as cpu usage gets high as soon as I open it and goes down when it is closed.
It is also causing massive battery draining but I guess that is the result of high cpu usage.

App information:
version: 2.0.18-1
plugins: no plugin installed except the default ones.

System information:
OS: Manjaro 17.0.1 Gellivara
Kernel: x86_64 Linux 4.9.22-1-MANJARO
Shell: bash 4.4.12
Resolution: 1920x1080
DE: KDE 5.32.0 / Plasma 5.9.4
WM: KWin
CPU: Intel Core i7-7500U @ 4x 3.5GHz [56.0°C]
GPU: Mesa DRI Intel(R) HD Graphics 620 (Kabylake GT2)
RAM: 7869MiB

Please ask if any other info is required.

[LiquidO2]

*this issue was not there in previous version.

[riccardolardi]

#3402

[helionmelion]

did u notice a small but constant disk io write from nylas process? is it normal?

[shreebles]

@helionmelion I noticed this only in the beginning when Nylas was initially syncing all my mail, but not anymore now that everything has been synced.

[helionmelion]

@shreebles here nylas finish sync but disk io continues. I checked with iotop. Disk write only.

[jstejada]

merging into #3178