Doesn't take window snapshots properly

[Uqbar]

1. Open system settings and maximize
2. Attach a camera via USB (*)
3. Open Digital Camera settings
4. Select and Open the specific camera settings
6. Invoke the screenshot tool (I usually press PrtScrn button)
7. Select
7.1 Area:Window under the cursor
7.2 Delay: On click
7.3 Include window titlebar and borders
8. Take a new snapshot
9. click the cross over the specific camera settings window title bar

Expected: a screenshot of the clicked window

Actual: a screenshot of the general camera settings window

Happens: ALWAYS

(*) this is how I found it. maybe there are easier ways, though.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: kde-spectacle 15.12.3-0ubuntu1
Uname: Linux 4.4.11-040411-lowlatency x86_64
NonfreeKernelModules: nls_iso8859_1 snd_seq_dummy snd_hrtimer 8812au cfg80211 rfcomm pci_stub vboxpci vboxnetadp vboxnetflt vboxdrv bnep btusb btrtl btbcm btintel xt_multiport iptable_filter ip_tables x_tables ath3k bluetooth uas input_leds usb_storage snd_hda_codec_realtek hp_wmi sparse_keymap snd_hda_codec_generic intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel snd_hda_intel snd_hda_codec kvm snd_hda_core snd_hwdep irqbypass crct10dif_pclmul snd_pcm crc32_pclmul aesni_intel snd_seq_midi aes_x86_64 snd_seq_midi_event lrw gf128mul snd_rawmidi glue_helper ablk_helper snd_seq cryptd snd_seq_device snd_timer serio_raw snd soundcore mei_me mei shpchp lpc_ich 8250_fintek mac_hid parport_pc ppdev lp parport autofs4 xfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 multipath linear hid_generic usbhid hid raid0 i915 i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt ahci psmouse fb_sys_fops libahci drm r8169 mii wmi fjes video
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
CurrentDesktop: KDE
Date: Wed May 25 19:58:16 2016
InstallationDate: Installed on 2016-04-22 (33 days ago)
InstallationMedia: Kubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
SourcePackage: kde-spectacle
UpgradeStatus: No upgrade log present (probably fresh install)

[Flames_in_Paradise (ellisistfroh-deactivatedaccount)]

@ uqbar:

Went through -> https://bugs.kde.org/buglist.cgi?quicksearch=spectacle

Most likely this could be an equivalent of

https://bugs.kde.org/show_bug.cgi?id=370945

Title: 'Window under cursor' works more like 'all windows of an application'

This KDE-bug was registered just recently – it's not a packacking-bug. So the Kubuntu-Team cannot do very much about it.

[Uqbar (uqbar)]

Nope. It's more like the other way around.
I clicked on a window (opened by an application) but it shot only the application main window rectangle, even if it was partially covered. See attached screenshot.

[SteBo (stebo)]

WORKSFORME with Kubuntu 17.10 and kde-spectacle 17.04.3-0ubuntu1.