I am affected by the same bug. Some extra information:
 - tapping definitely does something, as brief animation can be seen (icons flying away and back from button)
 - Sometimes tapping on icons switches on drag and drop mode (and stays like that), even though tap itself was short
 - I have tried cinnamon desktop (mint), and there was similar problem. Although mint menu would show, it was completely unresponsive. Unlike using mouse or touchpad.


coltzer@Aspire-R3-131T:~$ sudo dmidecode | grep -A9 "System Information"
sudo dmidecode | grep -A9 "System Information"

[sudo] password for coltzer: 
Sorry, try again.
[sudo] password for coltzer: 
System Information
	Manufacturer: Acer
	Product Name: Aspire R3-131T
	Version: V1.13
	Serial Number: NXG0YEK0346230EFDF6600
	UUID: 2E6CCB51-4B89-D24A-B6CF-7619984C4584
	Wake-up Type: Power Switch
	SKU Number: Aspire R3-131T_1022_1.13
	Family: BSW

coltzer@Aspire-R3-131T:~$ sudo lshw - short
Hardware Lister (lshw) - B.02.18
usage: lshw [-format] [-options ...]
       lshw -version

	-version        print program version (B.02.18)

format can be
	-html           output hardware tree as HTML
	-xml            output hardware tree as XML
	-json           output hardware tree as a JSON object
	-short          output hardware paths
	-businfo        output bus information

options can be
	-class CLASS    only show a certain class of hardware
	-C CLASS        same as '-class CLASS'
	-c CLASS        same as '-class CLASS'
	-disable TEST   disable a test (like pci, isapnp, cpuid, etc. )
	-enable TEST    enable a test (like pci, isapnp, cpuid, etc. )
	-quiet          do not display status
	-sanitize       sanitise output (remove sensitive information like serial numbers, etc.)
	-numeric        output numeric IDs (for PCI, USB, etc.)
	-notime         exclude volatile attributes (timestamps) from output

coltzer@Aspire-R3-131T:~$ lspci
00:00.0 Host bridge: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series SoC Transaction Register (rev 35)
00:02.0 VGA compatible controller: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Integrated Graphics Controller (rev 35)
00:0b.0 Signal processing controller: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series Power Management Controller (rev 35)
00:13.0 SATA controller: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series SATA Controller (rev 35)
00:14.0 USB controller: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series USB xHCI Controller (rev 35)
00:1a.0 Encryption controller: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series Trusted Execution Engine (rev 35)
00:1b.0 Audio device: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series High Definition Audio Controller (rev 35)
00:1c.0 PCI bridge: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series PCI Express Port #1 (rev 35)
00:1c.1 PCI bridge: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series PCI Express Port #2 (rev 35)
00:1f.0 ISA bridge: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series PCU (rev 35)
00:1f.3 SMBus: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx SMBus Controller (rev 35)
01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 15)
02:00.0 Network controller: Intel Corporation Wireless 3165 (rev 81)
coltzer@Aspire-R3-131T:~$ lsmod | grep multi
hid_multitouch         20480  0
hid                   118784  3 i2c_hid,usbhid,hid_multitouch
coltzer@Aspire-R3-131T:~$ modinfo hid_multitouch | grep version
srcversion:     F120069FA6914E49C917A88